I am trying sugarsync and have found what i consider a major flaw--the program does not recognize external drives and therefore does not allow me to back them up. I sent someone a link to one of my sugarsync folders in order to upload a large file. The receiver refused to upload my file because apparently if you upload anything over 100 MB you have to download sugarsync's desktop manager to your machine--something that most admin policies prohibit of course. Two nails in sugarsync's coffin for me. Just got off the phone with a Mozy salesman and he said that file sharing and support of mobile devices (smart phones) is coming soon to Mozy's service.