Fran Berkman wrote an interesting post on Mashable on the business models of internet companies entitled How Your Favorite Internet Companies Make Money. 47 different websites are covered.
Here’s a sample of some social networking websites, including Linkedin, Facebook, Twitter, YouTube and Tumblr.
Results were conceptualized by SEER Interactive and designed by O3 World.
Note that of these 5 sites, only Tumblr is unprofitable. It’s also the only one relying on the fremium model.
See Other Posts on Online Business Models