I think you get a new button every round 100 and your rep remark (whatever you call it at every halfway mark (at the x50) so from looking at yours sarge,I can tell you have a score of between 100 and 150. I think that the difference in the points is dependant on the rep level of who gives you the rep, it would be interesting to get some from Sven to see (not very likely, he thinks if he gives it out he will loose some of his own
whoops I see some negative coming my way 
))