figured out how to do it on day 1 of the beta but it seems a few others have too, which is cool.
Basically, you need two packets.
Make a team game, you on red, a friend on blue. (Doesn't matter which way around.)
Minimize, begin capture in your packet editor, maximize, and get your friend to kill you.
When you re-spawn, minimize, stop capture.
Find the packet for him killing you, and the packet for spawning, now run them both at the same time.
You will respawn, die, respawn, die, respawn die, really really fast, giving the person who killed you loads of exp.
Now, you ask, "But I need another person on my team or the team progression will get to 30/30 and game will finish."
Simple, exit the game to the Game Waiting screen, and msg him via MSN or something to make sure he's still getting EXP, it should be working.
If after 3 days, MAIET haven't patched this, I will release my program compiled in C++ which does this for 15 people simultaneously.
HERE IT IS
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No importa pero si importa tampoco importa