To cheer things a bit, here are some higher numbers: Flickr: 5-10% Ning: 3% Online free-to-play games: up to 25% TurboTax Online: 70% (!!) Source: http://www

To cheer things a bit, here are some higher numbers: Flickr: 5-10% Ning: 3% Online free-to-play games: up to 25% TurboTax Online: 70% (!!) Source: http://www.longtail.com/the_long_tail/2008/11/freemium-math-w.html http://www.longtail.com/the_long_tail/2008/11/freemium-math-... My opinion: it depends on a lot of factors. From my experience without much effort you can get 1% users convert. But like I said there a lot of variables that can mess it up or down.