I pay for dropbox for dedicated storage. it will be there. How long until the first stories of people not being able to get their files back out of BT Sync. Also they don't talk about the hidden cost, that I assume you have to use a lot more of your HD to store other people's stuff and a load of your bandwidth.

Remember this system works by using all the clients as the server farm. And for that kind of system you need more redundancy than normal, so you're probably paying many X gb in harddrive space what you are storing on it. Want to store 10gb on it? got 30 or 40gb to spare? if not, stick with trusty reliable no hidden costs dropbox