Yep..... $500 of our money
To refer someone, simply ask them to enter your username when they sign up, or you can append your referrer ID to the end of links like this:
http://www.smartphonestalk.com/?referrerid=X
Where X is your user id.
To find your user ID, click on the "Quick Links" in the navbar, and then click on "My Profile". On the next page, have a look in the browser's address bar and you will see at the end of the URL there is a "u=" followed by a number. That is your user ID
So if your user ID is 3 (which is me lol) then your link would look like this:
http://www.smartphonestalk.com/?referrerid=3
I think this is a pretty good incentive so get out there and help us grow!