Social Networking Stats: Facebook’s Ad Revenue Is 22X Twitter’s, #RLTM Scoreboard

The #RLTM Scoreboard:  Social Networking Stats for the Week

Facebook: over 845 million users via Facebook
Twitter: over 500 million users via Twopcharts
Google Plus: over 90 million users via Larry Page
LinkedIn: 150 million members via LinkedIn
Renren: over 170 million users via iResearch iUser Tracker
Qzone: 500 million active users via China Internet Watch
Sina Weibo: over 250 million users via Forbes
Groupon: 115 million subscribers via Reuters
Tumblr: 46.7 million blogs via Tumblr
Posterous: 3.9 million members via SF Gate
Pinterest 11.7 million monthly uniques via TechCrunch
Foursquare: 15 million users via Mashable
Instagram 15 million users via The Next Web
Tagged 20 million active users  via The Wall Street Journal

Please email if you have additional updates, or a social network that you feel should be on the list.

Twitter’s Ad Revenue Reaches $139.5 Million in 2011

Facebook's Ad Revenue Is 22X Twitter'sThe Wall Street Journal reports that Twitter is working towards being ready for an initial public offering, and ad revenue for the site reached $139.5 million in 2011.  In comparison, ad revenue at Facebook (which has plans to go public in May 2012) is 22 times larger, at $3.15 billion.

How does this relate to user numbers? Facebook is two years older and now boasts over 845 million users, compared to Twitter’s 500 million users.

So Facebook’s audience is just 1.69 times larger than Twitter’s, but the social networking giant’s ad revenue is a whopping 22 times larger.  What will Twitter do to win over more advertisers? The company has taken two steps recently: selling ads to small businesses for the first time, and starting to show a full range of ads to mobile users.  Will these changes provide a significant boost to Twitter’s ad revenue?