Insignias... What are they???

Hey-

Can anyone give me the debriefing on Insignias and their purpose? Like how long have they been around? And how would I use them? And how would they effect me? Etc...

Thanks alot!

-Cateran Overlord-

http://gw.gamewikis.org/wiki/Insignia

A simple search of the forums would've answered your question as well.