You should check out my take on this: http://chartaca.com http://chartaca.com Free, as many charts as you like, and no data limits! :) Just a word of warning .

You should check out my take on this: http://chartaca.com http://chartaca.com Free, as many charts as you like, and no data limits! :) Just a word of warning ... it's barely even an MVP at this stage. More a sort of experiment to see how far I can push one of those free Amazon micro instances (pretty far when you use node.js as it happens!).