Cool, wasn't even aware of MindMup. I'm using Freemind+local storage but a cloud based solution has some potential advantages. Looks pretty cool, too and there's a Freemind import..nice.

I usually keep programming related stuff in mind maps (how to do X,Y,Z in language A). Cloud+share might be interesting to collaborate when learning a new language etc.

I'll give it a try this week. Good luck :)

p.s.: The logo looks adorable :D