It appears to be about the same service as Dropbox, except a bit less centralized. So it'll be faster because you don't have to go through a centralized server,

It appears to be about the same service as Dropbox, except a bit less centralized. So it'll be faster because you don't have to go through a centralized server, e.g. your phone and computer can talk directly on WLAN instead of going through your slow internet connection