Dropbox used to have a statement in their terms of service that basically stated that they owned any files you uploaded to it and had the right to sell those files in the event of an acquisition. Anyone know if that is still true? I skimmed the TOS just now and didn't see it this time.
Still, sites can change their terms of service at any time (actually, I can't find a nice disclaimer to that effect in their terms, but I assume it has got to be there somewhere). So, if you don't trust Dropbox not to sell things you don't want them to sell, you shouldn't use them.
The clause about selling personal information is pretty standard. I suspect you'd find that language in almost any commercial site that collects personal information. I'm not sure if removing that clause would even change anything legally. I think customer databases would still be considered assets in bankruptcy court. When CompUSA and Circuit City went under their customer databases were sold off.
In any event, I'm curious about getting Dropbox-like functionality with unRAID. Basically, I'd like to keep my "My Documents" folders synchronized across my laptops and desktop. I'm a dropbox user too, but I don't use that for a couple reasons. First, because I'm just a free user and I have more than 2 gigs of stuff in my "My Documents" folder. A second, while I might be willing to pay for Dropbox, you can't have it monitor arbitrary folders without doing weird hacks. iFolder looks like it might be a good option, but I'm curious if anyone has used it with unRAID.