I hope it's okay to do some "gravedigging" in here =)
I really like the idea with the points... and it should not be too hard to integrate irc as well... at least from a technical point of few... just get an eggdrop to log the channel... but finding nice points-algorithms could be hard...
And I like fame idea from the linked thread as well... marking interesting/complicated/boring/senseless threads to influence their point value... (sounds a bit like slashdot) Although I see potential for manipulation there... like, if a user annoys me i mark al his posts as low as i can, or if i need points, I create some sockpuppets to praise me...
I don't see the big problem with giving points to friends... If a person is active enough to support more then one person, then so be it... Just means we have one very active person instead of two moderately active ones...
hm, instead of limiting how many someone can give, you could create two kinds of points, own and given, or something... i don't know WHAT you will be selling for the points, but i could imagine something like needing own points for a basic account(ensuring at least basic interaction with the community) but being able to buy "addons" with given points...
I'd like to know how the points are given, if the formula is not tooo complicated, but I'm uncertain if I really wanna see it posted here, as this might lead to people trying to find out the optimal way to ensure max points with min efford
