Dropbox is one of those handy services that can really make your life easier. Whether you’re backing up important files, or sharing some with co-workers for a project, it can be a life saver. The best part is that the service is free, so long as you don’t need more than 2GB of storage. But even then, you can get more without having to pay.

Lifehacker has put together a great guide on how to get Dropbox to give you more storage space for free. See, Dropbox will give you extra storage, so long as you get other people to sign up. Of course, you have to refer a lot of people to get your max of 8GB of free space, since each one only nets you 250MB. Lifehacker’s method involves using Google Adwords to advertise your referral link. You can get free Adwords credit in a number of ways. Then just setup a few ads, and wait for people to click. Before you know it, you’ll have your extra space. Pretty clever, I’d say.