looks like for new users.
250mb file limit
started on Feb 8, 2013.. not sure how long it will last.
it does have a syn function (an additional application you have to download), but i think it is only for 1 mobile device and 1 computer. maybe you have to pay for more devices to sync.
I have not tried this yet.
i still think dropbox is best.. but 50GB is awesome.