I use and update hundreds of pictures everyday, on my home pc, my work pc, online and offline on my iPad, and share with lots of Colleagues with their multiple devices! This really is the best app that can support this, and keep everyone synced.
There is one hitch. Downloading to iPad to use offline using folder sync, alert function, "push to device", and even syncing individual files (yuk), sometimes does not sync. The only way to fix problem at the moment is to delete the app, and download everything again (double yuk). When techs find the problem, this app will be untouchable!
EDIT: The long-awaited update seems to have fixed things. Although my wife now is having problems with hers. Maybe I am overworking the app???
Mitchemetron99 about SugarSync, v4.0.1