Green Bars...???

[MeinDraco]

Not sure if this is where i need ask or not...but what are the green bars located under our screen names? Ive noticed some users have more bars than others, and i recently just received my second bar but i do not know why or how.

Im assuming this is some sort of veteran or frequency marking, but how does it work?

Any info would be greatly appreciated!

LoL thanks for posting this....I always wondered that too...so I thanked you to raise your reputation and Thanks to Slim for clarifying.