Funny. I actually looked into FreeMind today and decided to give it a try. Only after trying Mindmeister did I got back to FreeMind and start using it. I actually think that Mindmeister is a nicer application, but FreeMind is free software, so that's free as in freedom.

I am slightly worried about Web 2.0 that lock you in. I think they are well suited for short term projects, but for personal stuff that you want to grow over the long term, maybe Web 2.0 are not a good match. What if the company goes out of business?

Well, I do trust Google to stick around, so I do rely on them (google mail, google documents) but even so, I have a lot of stuff on my own computers and I am not ready to go 100% Web 2.0 yet.

Before this day can come, I need to be able to trust that I can back the data up myself and that the data format is open.

This may be the next step, Web 2.0 applications using open format and allowing to back your data up elsewhere.