Hello. Well I was thinking of a way to recruit friends. I hope "recruit" is the right word for this, ´cause I had to look it up.
So if somebody registers new an additional field gets the name of the user that made him visit and register on this website.
Its not like the other user has to get activity points (which would be a nice feature too), a nice page that shows up the best "referrers" to win something e.g.
What do you think?