As a big sucker for free junk (points of any kind) I signed up for MileSource.com The payouts seem generous (5000 miles = $50 gift certificate) however, they are probably the most stingy with their miles.

However, they have a pyramid based referal program. You earn 10% from referalls one level below you, and 5% for referalls two, three, and four levels beneath you.

We can probably earn a lot of collective miles if we work together and start referring each other.

Someone please sign up using:

http://www.milesource.com/join/join.php3?referrer=xxxx

Once you've signed up, post your referral link and hopefully everyone will be able to get referrals 4 levels deep.