When you sign up for a regular Drop Box account, you will be given the standard 2.5 gigabytes for free from Dropbox.com. You can use this to store basically any files you have on your computer, but if that isn’t enough you can pay $9.99 a month for 10gb of storage.
There is an alternative though to get more free space, starting with an extra 500MB immediately and then up to a total of 16gb for free.
To get 3 gigs from day one, you can start by signing up for an account clicking here. That is my personal referal page that gives new members an extra 500 megabytes of free data storage.
Now after you sign up for your account (or if you already have a Drop Box account), you can go to the referral page like I did and refer friends or family to sign up for account. If they sign up for a free account, each of you will be given an extra 500 megabytes of space.
You can keep getting people to sign up under your referral link to get 500 megabytes per person until you max out at 16 gigabytes of free Drob Box space.
The referral link can be found by going to the bottom of the Drop Box page after you log in, then clicking “Referrals” or you can follow this link.