At Dropbox, new users can get 875MB of extra storage space for free via the instructions below. (You start out with 2GB of free storage; each step earns another 125MB unless otherwise noted.) That's the best freebie we've seen from Dropbox since June, when we saw an extra 3GB for syncing photos or videos from an iOS device. To get this deal:
  1. Click here and sign in or create a new account (it's free), then click "Get free space!" at the top
  2. take a tour of Dropbox, including downloading and using files (for 250MB)
  3. connect to Twitter
  4. follow @Dropbox on Twitter
  5. connect to Facebook
  6. write a line of feedback
  7. tweet that line of feedback