Check out the top SEO, search engine and Internet marketing industry news stories from around the Web this week.

Google+ Gains Nearly 10 Million Users in First 2 Days of Being Open to the Public
Google+ experienced a 30% growth in only 2 days of being open to the public. Read more details here.

comScore Releases August 2011 U.S. Online Video Rankings
comScore, Inc. released data showing that 180 million U.S. Internet users watched online video content in August for an average of 18 hours per viewer. The total U.S. Internet audience engaged in a record 6.9 billion viewing sessions.

Facebook Changes Again: Everything You Need to Know
Mark Zuckerberg’s keynote at the F8 conference in San Francisco revealed that Facebook will be going through some major changes within the next few weeks, including the release of Timeline. This guide will help you get an idea of what to expect.

Google Senate Hearings: The Post-Game Show
Search Engine Land examines the Google hearing from last week in more detail.

Google +1s on Ads Added to Google Display Network, Will Influence Auction
According to Search Engine Land, Google +1 data will now affect Google Ads auctions. Read more details here.