I'm just making an observation here and offering food for thought and not critisising at all.
This is the first forum I have come across that implements a "thank the poster" button on posts.
While in principle it's a good idea I am wondering if the fact that most other forums don't implement it means that it is open to manipulation by users artificially bumping up peoples "thanked" counts. Although I am positive the overwhelming thank-you's are genuine I am also certain some will not be.
So, my food for thought idea is what about publishing a percentage ranking (thanked posts/total posts) of thank-you's in at least addition to the total count if not replace it alltogether for each user. The thank-you's for a user could be tallied from post 1 but not published for the user say untill 100,150,200 or whatever total posts because having a percentage of 100% after 1 post is also meaningless.
I think a percentage ranking would have multiple benefits.
1) For posters who place importance on their percentage ranking, it should encourage less fluff and more quality posts which is to the benefit of everyone.
2) Currently, the top ranked thanked posters have been here for a while and so the top rankings, based solely on total thank-you's, are unlikely to change much at all. A percentage ranking would probably alter the top rankings more often and so provide more interest to other posters.
3) A percentage ranking will make the rankings much less susceptible to being manipulated.
Anyway, this is just the mathematics side of my brain talking and just some food for thought