Top 50 August Website, Ad Platform Rankings

Top 50 Properties

In comScore’s rankings, Google (GOOG) Sites once again led as the most visited property in August with 161 million visitors, followed by Yahoo (YHOO) Sites with 158 million visitors and Microsoft (MSFT) Sites, with 130 million visitors. Facebook.com held its #5 ranking with 92 million visitors, up 5% from the previous month, comScore said.

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The Mozilla Organization rose 6 positions on the list to #24 with 32 million visitors, while iVillage.com also jumped 6 spots to #41 with more than 21 million visitors, comScore said.

Compete’s August analysis similarly ranked Google and Yahoo in the top two spots, but clocked Facebook at #3, MSN at #4 and YouTube at #5.

Top 50 Ad Focus Rankings

AOL Advertising (renamed from Platform-A) led the August Ad Focus ranking, reaching 91% of all Americans online, according to comScore. Yahoo Network ranked second, reaching 88% of the population, while Google jumped one spot to #3 with an 84% reach.

Also notable: Adconion Media Group climbed 5 positions to the #20 spot with 129.6 million unique visitors, reaching nearly 66% of the US internet audience.

About the data: comScore, Inc. and Compete.com use different methodologies to calculate monthly website rankings.