Same here. I learned Python out of curiosity, but started using it for real work only after the Google App Engine launched. I hear similar anecdotes from others as well.

Same here, but then I learned that there're projects focused on running Ruby on AppEngine.

http://code.google.com/p/appengine-jruby/wiki/GettingStarted

Yeah. I wish heroku offered more than 5MB on its' freebie plan.