Dropbox's move in terms of upping free storage from 2GB. I would expect within a few weeks to hear that they up the free space. As it is, expect Google Drive to be shipping on AOSP Android devices in the future, at least that would seem a smart move. Dropbox mobile app is great, but quirky in that you can no longer keep a local copy of the file unless exported.
BTW, I also use dropbox and love it. Through referrals, I have my free space up to 7.2GB.