Exhibit 99.1

comScore Reports First Quarter 2012 Results

Revenue grows 18% year-over-year

Adjusted EBITDA increases 18% year-over-year

Total Deferred Revenue Grows to Record $78 million

RESTON, VA – May 2, 2012 – comScore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today announced financial results for the first quarter of 2012.

In the first quarter of 2012, comScore achieved quarterly revenue of $62.3 million, which was an increase of 18% over the first quarter of 2011. GAAP income before income taxes was $0.6 million and GAAP net loss was ($0.5) million, or ($0.01) per basic and diluted share. Non-GAAP net income was $7.9 million, or $0.23 per diluted share. Adjusted EBITDA was $11.6 million or 19% of revenue, an increase of 18% from adjusted EBITDA of $9.9 million in the first quarter of 2011.

Dr. Magid Abraham, comScore’s president and chief executive officer said, “We are pleased to report revenue and adjusted EBITDA within expectations in the first quarter. As an example of our recent successes, our Media Metrix product line was recently selected by the United Kingdom Online Measurement (UKOM) industry association, as the preferred audience measurement service in the United Kingdom beginning in 2013, after a six month evaluation that included the comparison of comScore’s Unified Digital Measurement (UDM) methodology to alternative offerings. Our strategy to expand our market opportunity by addressing a broader range of digital measurement and analysis products is progressing, with new products building considerable interest. We are particularly enthusiastic about market reception to our new validated Campaign Essentials (“vCE”) product in our Advertising Analytics suite. Since its launch, Campaign Essentials has been deployed on over 2,600 campaigns by over 200 customers. This includes over 35 paying customers, who adopted vCE since its launch in January 2012, with many of these customers committing to annual subscriptions for multiple-campaigns. Despite our strong focus on selling tools such as vCE and our website analytics product, Digital Analytix, to existing customers, we also added 44 net new customers in the first quarter. We are particularly pleased with the sales momentum of Digital Analytix, adding clients such as Microsoft and Virgin Media. We are especially encouraged by growth in our US pipeline, which demonstrates Digital Analytix’ significant traction in the American market. In the mobile market, our Customer Insight Manager suite, a combination of the Nexius Xplore product line and comScore digital data collection expertise, is also gaining interest among both domestic and international carriers. With our larger overall deal sizes, deferred revenue grew sequentially to a record level in the first quarter. This momentum, when combined with renewals rates that continued to exceed 90% on a constant dollar basis, positions us well for the balance of 2012.”

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Financial Outlook

comScore’s expectations for the second quarter of 2012 are outlined in the table below:

comScore’s expectations for full year 2012 are outlined in the table below:

Due to the high variability and difficulty in predicting certain items that affect GAAP net income, such as tax rates and stock price, comScore is unable to provide a complete reconciliation of Adjusted EBITDA to net income (loss) on a forward-looking basis without unreasonable efforts. However, a reconciliation of forward-looking Adjusted EBITDA to GAAP income (loss) before income taxes is set forth in the attachment to this press release.

Conference Call Information:

Management will provide commentary on the company’s results in a conference call on Wednesday, May 2 at 5:00 pm ET.

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The conference call and replay can be accessed by telephone and webcast as follows:

Call-in Number: 888-713-4218, Pass code 75105244

(International) 617-213-4870, Pass code 75105244

Replay Number: 888-286-8010, Pass code 21750450

(International) 617-801-6888, Pass code 21750450

Webcast (live and replay): http://ir.comscore.com/events.cfm

About comScore

comScore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital world and preferred source of digital business analytics. For more information, please visit http://www.comscore.com/companyinfo.

Non-GAAP Financial Measures

comScore reports all financial information required in accordance with generally accepted accounting principles (GAAP). comScore believes, however, that evaluating its ongoing operating results will be enhanced if it also discloses certain non-GAAP information because it is useful to understand comScore’s performance, as it excludes non-cash and other charges that many investors believe may obscure comScore’s on-going operating results.

For example, comScore uses non-GAAP revenue and non-GAAP net income, which excludes stock-based compensation, amortization of acquired intangible assets, impairment of marketable securities, costs from acquisitions, restructurings and other non-recurring items, the non-cash deferred tax provision, litigation and related settlement costs, and the purchase accounting impact on acquired deferred revenue. comScore reports non-GAAP EPS (diluted), which uses non-GAAP net income in lieu of GAAP net income in calculating earnings per share.

In addition, comScore believes that adjusted EBITDA is a useful measure for investors to use to evaluate its operating performance. Adjusted EBITDA comprises non-GAAP net income further adjusted to exclude the cash tax provision, depreciation, interest income (expense) net, and costs not associated with ongoing operations, such as acquisition related, litigation and related settlement costs. A reconciliation of comScore’s GAAP results to these non-GAAP measures is included in the financial tables accompanying this release.

The company believes that adjusted EBITDA is an important indicator of the company’s operational strength and the performance of its business because it provides a link between profitability and operating cash flow. Adjusted EBITDA is also widely used by investors and analysts as a supplemental measure to evaluate the overall operating performance of companies in comScore’s industry. comScore’s management also uses adjusted EBITDA extensively as a measure of operating performance because it does not include the impact of items not directly resulting from its core operations. Moreover, the company’s management uses the measure for planning purposes, to allocate resources and to evaluate the effectiveness of the company’s business strategies and management’s performance.

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The company believes that excluding certain costs from non-GAAP net income and EPS and from adjusted EBITDA provides a meaningful indication to investors of the expected on-going operating performance of the company. Specifically as it relates to acquisitions and restructurings, the exclusion of these costs reflects the expected benefits realized or to be realized upon the integration of acquired entities into comScore, and the realized benefits of the restructurings.

comScore’s management also uses free cash flow as a non-GAAP measure of the company’s operating cash flow less cash expenditures for capital spending and acquisition-related costs as a key indicator of the company’s operating cash flow performance.

Whenever comScore uses such historical non-GAAP financial measures, it provides a reconciliation of historical non-GAAP financial measures to the most closely applicable GAAP financial measure. Investors are encouraged to review the related GAAP financial measures and the reconciliation of these historical non-GAAP financial measures to their most directly comparable GAAP financial measure included in the financial tables accompanying this release. Although the company provides a reconciliation of historical non-GAAP financial measures, due to the high variability and difficulty in predicting certain items that affect net income, such as tax rates and stock price, comScore is unable to provide a complete reconciliation of adjusted EBITDA to net income on a forward-looking basis without unreasonable efforts. However, a reconciliation of forward-looking adjusted EBITDA to GAAP income (loss) before income taxes is set forth in the attachment to this press release.

These non-GAAP financial measures do not reflect a comprehensive system of accounting, differ from GAAP measures with the same captions and may differ from non-GAAP financial measures with the same or similar captions that are used by other companies. The use of certain non-GAAP financial measures requires management to make estimates and assumptions regarding amounts of assets and liabilities and the amounts of revenue and expense during the reporting periods. Significant estimates and assumptions are inherent in the analysis and the measurement of certain elements of non-GAAP financial measures such as the impact of purchase accounting on acquired deferred revenue and the amortization of deferred contract costs associated with acquired deferred revenue. comScore bases its estimates on historical experience and assumptions that it believes are reasonable. Actual results could differ from those estimates.

Cautionary Statement

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, including, without limitation, comScore’s expectations as to adoption of new products and services by existing customers; expectations regarding continued growth of its customer base; expectations as to customer renewal rates; expectations regarding the customer reception, impact and financial benefits of certain products, including Digital Analytix and validated Campaign Essentials products; the effects of the integration and adoption of certain products recently acquired by comScore; expectations as to the benefits of selection by industry associations such as UKOM as a regional or national standard for online measurement; expectations and forecasts of future financial performance, including related growth rates and components thereof; and assumptions related to growth for the second quarter and full year of 2012. These statements involve risks and uncertainties that

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could cause our actual results to differ materially, including, but not limited to: comScore’s ability to generate strong revenue and margin growth in future periods; comScore’s ability to retain existing large customers and obtain new large customers; comScore’s ability to manage its growth, including through acquisitions; comScore’s ability to sell new or additional products and attract new customers, as well as longer sales cycles related to newer products such as validated Campaign Essentials and Digital Analytix; comScore’s ability to sell additional subscription-based products to customers; comScore’s ability to sell additional products and services to existing customers; limitations over comScore’s control of certain variables in financial forecasts such as its stock price and the resulting effect on its tax rates; and the volatility of quarterly results and expectations.

For a detailed discussion of these and other risk factors, please refer to comScore’s Annual Report on Form 10-K for the period ended December 31, 2011 and from time to time other filings with the Securities and Exchange Commission (the “SEC”), which are available on the SEC’s Web site (http://www.sec.gov).

Stockholders of comScore are cautioned not to place undue reliance on our forward-looking statements, which speak only as of the date such statements are made. comScore does not undertake any obligation to publicly update any forward-looking statements to reflect events, circumstances or new information after the date of this press release, or to reflect the occurrence of unanticipated events.

Contact:

Kenneth Tarpey

Chief Financial Officer

comScore, Inc.

(703) 438-2305

ktarpey@comscore.com

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comScore, Inc.

Condensed Consolidated Statements of Operations

(dollars in thousands, except share and per share data)

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comScore, Inc.

Condensed Consolidated Balance Sheets

(dollars in thousands)

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comScore, Inc.

Condensed Consolidated Statements of Cash Flows

(dollars in thousands)

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First Quarter 2012 Supplemental Financial and Business Information

(dollars in millions)

Reconciliation of Income (loss) before income taxes to Non-GAAP Net Income and Adjusted EBITDA

(dollars in thousands, except per share amounts)

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Reconciliation of GAAP Operating Cash Flow to Free Cash Flow

(dollars in thousands)

Reconciliation of GAAP revenue to non-GAAP revenue and reconciliation from Loss before income taxes to Adjusted EBITDA (Guidance)

(dollars in thousands)

Forecasted amounts for the three and twelve month periods ending June 30, 2012 and December 31, 2012 are based on the mid-points of the range of guidance provided herein

The three and twelve month periods ending June 30, 2011 and December 31, 2011 reflect reported results

Estimated Q2 2012 and full year 2012 non-GAAP (Diluted) share count is 34.7M and 34.8M, respectively.

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