hi, if you've ever wanted to show your friend(s) how easy is to start with Rails, show'em this little playground project of mine. Anyone can get started with Rails in about 2 seconds without actually installing anything. All you need is a decent browser. It's somehow similar to Heroku, though its main goal is slightly different and there are no intentions in competing with that forementioned lovely project.. :)

best regards, petr

p.s. technical note - all registered applications run on SINGLE Mongrel :). Currently about 60 Rails applications sharing one instance ~60M of memory in total:)