Getting more Dropbox space is like earning achievements in your favorite video game. _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ It’s been a while since I wrote about Dropbox vs. Google Docs (for MS Office document backup), and there have been new developments since then that really make this software interesting. So how do you get started? First, create a Dropbox account (clicking this link gives you and I both 250MB extra storage space on top of your initial 2GB) After you sign up, you will be presented with a list of basic tasks that teach you the basics of the service. As an incentive, you are awarded extra storage space (250MB) upon completion of all…