JIMMY1965:
people woh quit should get a mandatorey 5points add to there ranking. it crap that people just quit to conserve a ranking. at the very least you should post how many abandon games each player has so one can deceide if he/she even wants to start a game with said player. ENOUGH WITH THE QUITTERS!
The reason why point additions/average penalties aren't already in use is because of potential connection problems. For instance, if someone disconnects from a game due to internet troubles, and is unable to get back online, it would be unfair to penalize them.
With the method nivlac (WGTniv) has mentioned above, it wouldn't completely eliminate people quitting, but it would give you the opportunity to view the reliability of a potential opponent before challenging him in Match/Stroke Play!