Awesome file-sharing/backup service Dropbox offers 2GB of storage space free of charge. Want to make it 3GB? Then I hope you like scavenger hunts of the online variety.
It's called Dropquest, and the reward for completing it is an extra 1GB of Dropbox storage. (Ignore the stuff about the "epic extra prizes," as those have almost certainly been claimed already.)
Make no mistake: this 30-step (!) contest is not easy. In fact, I'd guess that most users will get stuck around Step 4. And it doesn't help matters that Dropbox provides no instructions to speak of. You'll have to rely solely on your wits.
Or, if you're strapped for time, this collection of cheats. (Be sure to scroll to the bottom for a list of other ways to score extra Dropbox storage.)
Let me know how far you get. But don't wait too long: the Dropquest ends Jan. 29.