So, basically you create this virtual plane, see, then invite two friends a day, getting them, in turn, to invite two friends per day, with the thought that you can hopefully fill the plane with 300 friends before anyone else! As for myself, I might be able to scrounge up those first two friends, but after that fuggedaboudit. And then you're stranded with those 300 folks for 3 days. I mean you win a trip. Yeah.
One more thing--they have to be real friends, not "Myspace" friends. I doubt that Tom is really going to get on that plane with you.