10 Companies Getting Rich on Mobile Apps

A look at March's leaders in mobile app-generated web traffic

May 9, 2012, 7:15 am EDT | By Jeff Reeves, Editor of InvestorPlace.com

#9: Twitter, 25.6 million+ mobile visitors per month

Coming in just slightly ahead of Rovio — roughly 25.6 million unique visitors each month vs. 25 million for the game company — is Twitter. The social media platform is perfect for mobile because it puts a natural cap on finger-tapping via its 140-character limit and has built-in functionality to share pictures from your phone. The company currently is private, though there is perpetually talk about taking Twitter public via an IPO.