Microsoft, Google and Facebook Rank as Most-Visited Online Destinations in Argentina

Comscore Offers Complimentary Webinar: State of the Internet Argentina

Buenos Aires, Argentina, November 18, 2010 - Comscore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today presented the State of the Internet Argentina in conjunction with the IAB Argentina. Among the presentation’s highlights included a look at the top online destinations for Argentines. The report found that Microsoft Sites led as the most-visited Internet property in the market, reaching 95 percent of all Internet users. Google Sites ranked as the second-most visited property with 11.6 million unique visitors, followed by Facebook.com with 10.7 million visitors. A reprise of the presentation will be given during a live, complimentary webinar: The State of the Internet Argentina, on Tuesday, November 30th. The webinar will be presented in Spanish. To register for the webinar, please visit: https://www1.gotomeeting.com/register/348991681

“The online channel in Argentina has experienced expansive growth in the past year with more people accessing the Internet and engaging with online content,” said Sebastian Yoffe, Comscore country manager for Argentina and Uruguay. “As one of the largest Internet markets in Latin America, Argentina represents an attractive environment for local and global brands to engage consumers that are turning to the Internet with increasing regularity.”

Microsoft Sites Attracts Largest Number of Visitors

In September 2010, nearly 13 million people age 15 and older visited the Internet from a home or work location in Argentina, a 9-percent increase from the previous year. Microsoft Sites ranked as the most-visited Internet property with 12.2 million visitors, up 24 percent, followed by Google Sites with 11.6 million visitors, up 18 percent. Facebook ranked third with 10.7 million visitors, climbing 54 percent, as the social networking destination continued gain fans across the Latin America region. Local property Grupo Clarin ranked as the fifth largest destination in the country with 6.1 million visitors, up 21 percent.

*Excludes visitation from public computers such as Internet cafes or access from mobile phones or PDAs

Additional highlights from the presentation include:

• An average Internet user in Argentina spent 25 hours online during September, consuming 1,810 pages of content and averaging 54 online visits during the month.
• Argentines spent more than 30 percent of their online time staying connected on Instant Messengers and Email sites.
• 7 of 10 Internet users in Argentina visited the News/Information category in September, with Grupo Clarin and Grupo La Nacion leading as the most-visited destinations in the category.
• 25 percent of Argentines online visited a Travel site in September with local brand Despegar ranking as the top site.
• 3 out of 5 Argentines visited an online retail site in September with MercadoLibre leading the way as the top retail-oriented destination in the country.

Comscore will present a complimentary webinar, The State of the Internet Argentina, on Tuesday, November 30 at 11:00 a.m. ARST. The webinar will be conducted in Spanish. To register for the webinar, please visit: https://www1.gotomeeting.com/register/348991681

About Comscore

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