Referrals

From the FAQ:

Can I email a link to a friend?
Another useful email function is the ability to send a friend a link to a thread you think they may find interesting. Whenever you view a thread, you will find a link somewhere on the page which will allow you to send a brief message to anyone you like. Your referrer ID is added to the link you send, so if your friend registers on this forum as a result of viewing the link you sent to them, your referrals total will automatically be credited.