I'd say they're more than "fairly" successful: http://blog.jedchristiansen.com/2008/02/25/37signals-is-one-hell-of-a-profitable-business/ http://blog.jedchrist

I'd say they're more than "fairly" successful: http://blog.jedchristiansen.com/2008/02/25/37signals-is-one-hell-of-a-profitable-business/ http://blog.jedchristiansen.com/2008/02/25/37signals-is-one-... Especially since we all know that they've turned down lots of buy offers, and only accepted an investment from Amazon to have access to Bezos. How dreamy. Not that that proves their assertions are universally applicable, however, they certainly prove that side projects CAN be a (much less treacherous) path to success. For what it's worth, that's what we're doing with our time tracking service, Freckle (http://letsfreckle.com http://letsfreckle.com). Just last week, we passed revenue of $4k/mo and I estimate we'll be able to live off it by end of January 2010.