Every paid or permanent user can send 6 blue dragons.
The first time you get a blue dragon, you get 2 free months. After that, it looks like you get nothing.
I already got 2 months, so don't bother sending it to me.
But if you haven't gotten one yet and would like one, comment here. I have 2 left to send out, but I can always add your name to the list of people looking for one.
But make sure to send some to someone who doesn't have one yet- don't let this opportunity to give paid time to your friends pass you by!
May have been a glitch - doesn't seem to be working anymore :(