The Scale Icon...
It allows users to add to your "reputation".


Triumph: White Succubus: 50 Ill/Emp/PF Snow Globe: 50 Ice/FF/Ice Strobe: 50 PB Shi Otomi: 50 Ninja/Ninjistu/GW Stalker My other characters
It allows people to rate you as a good or trusted (or a bad or untrusted) poster. When someone makes a post you find informative, entertaining, or otherwise worthwhile, you can click it to add to their reputation, which will in turn tell others (by way of the little "light" under a person's post count, I assume) who may not be as active on the forums which posters are generally thought of by the community as the most informed or trusted members. For example, someone who consitstantly posts good information, clearly states what the mean in a way others can understand, and helps new players might have a very high reputation, while someone who purposely makes their posts look like they're written in yellow crayon would probably not have a very good reputation.
FUN FACT: That burst of light when you level up is actually the effectiveness escaping from your enhancements all at once.
Of course, the bad thing about it is that it's ideally used when everyone's post count starts at zero. If it were, then if someone has a thousand posts and their reputation isn't good, you'd know they're probably just padding their post count. As it is, it's entirely possible that someone's post count could be a thousand and they simply haven't posted on the new forums yet.
Oh well, in time, it will be more useful.
If you ever read Slashdot, think of it like our own version of "karma."
We've been saving Paragon City for eight and a half years. It's time to do it one more time.
(If you love this game as much as I do, please read that post.)
Ah, thanks for clearing that up. I was wondering if it was something important or just another thing added for fun. Apparently, just for fun (in some ppl's eyes).
Home server: Guardian
My 50s: 3 scrappers, 2 tankers, 1 blaster, 1 defender, 1 controller, 1 warshade, 1 stalker, 1 brute, 1 corruptor, 1 widow, 1 dominator, 1 mastermind (on Liberty)

Current project
So what is the point of the little scale icon at the bottom left corner of the posts? I saw a little popup that says 'reputation'. Is there an elaboration somewhere about that?
Home server: Guardian
My 50s: 3 scrappers, 2 tankers, 1 blaster, 1 defender, 1 controller, 1 warshade, 1 stalker, 1 brute, 1 corruptor, 1 widow, 1 dominator, 1 mastermind (on Liberty)
Current project