i wouldnt say its great, its on the middle of the pack, there are things that still drag it down, there is a limit on the size of each file and number of files you can sync, also the software runs pretty slow and syncs pretty slow, its pretty stable on windows 7 but it kinda freaks out a lot on OSX and finally they actively scan the contents of your files in the cloud, and that is kinda were i draw the line, one thing is fully encripted drive, another is what dropbox does a sort of mix of security and ease, but microsoft goes out of its way to go through your files, thats a big brother nono, on the flip side, they do have realy cheap storage (i think google drive storage is ridiculous, especially comparing with dropbox) and their office/picture application support is probably the best, so i wouldnt say skydrive is all that great, its just ok.