I'm saddened to see Dropbox on the list. Did they choose to participate or is it mandatory? In any case, we've moved several projects to BTSync recently from Dropbox (for no other reason than to free up space on Dropbox for our personal files) and have been enjoying the service. As a p2p encrypted protocol, I imagine it's much more difficult to eavesdrop on your files and would actually require a warrant to obtain. I…
And yes, they can give your data to the government. Communications to/from Dropbox are encrypted. But it is unencrypted on the back end. See http://paranoia.dubfire.net/2011/04/how-dropbox-sacrifices-u... for how we can know that.