For example, a Lemur who stops an Ylian fight should receive some PP from RP-fair community.
Listening and aiding a Stonebreaker's pain while drinking beer could bring some PP.
Saving someone from death, showing someone the way to Ojaveda.
From an RP standpoint, I don't see how that would work. Considering that the game isn't designed to reward good roleplayers and punish the bad, nor would it be possible to even program something like that into the game. One person's good roleplaying is another person's nightmare. It would be a nightmare to even -TRY- to come up with a roleplaying-recognizing system.