I think in theory its brilliant but in practicality its rather shite.
So every GB you offer people you get 100MB in return, so in theory that is a lot of redundancy but really not enough in my eyes if people will be turning the PC's off and on.
What I hate is how they say its stored on their servers, that part pisses me off.
But good news is you get 1GB free, you can add friends you can share, its good on the social front but other than that it seems a little more trouble than its worth unless you really want to hide files
.
Screw truecrypt this is a brilliant method.
Thought I should add this, you can also BUY space (cheeky buggers) so in actuality if your trading space wuala are making money from that space.
I'm dissapointed, I would prefer to see a open source project like this where my HDD cannot be sold, but shared for all.