What do I need to do to throw an opponent?

[Mahali]

Thats pretty cool, uses the grapple check instead of just a str check, makes more sense.
Nothing about taking dmg though when they land eh? Bother. Thats still 2 feats to do that though, dang. So would they provoke AoO's when they're getting tossed by other combatants along the, er, fling path ?

You could add a falling damage for each 10' moved (d6 w/ tumble/jump helping).

No AoO's for the movement. 3.5 took virtually all of those away for forced movement.