Also, if you have multiple characters or multiple classes on your character, it's the one you select as your avatar which is used to determine your posting privileges. How many posts you can make or threads you can start in most forums here is determined by your avatar character's level. (Specifics in this post)

For instance, most of my gaming attention is on my Mi'quote character, Y'kayah, but his highest class is Archer/Bard at level 34. I use my Elezen character Dylise as my avatar, because she's a level 45 Arcanist/Scholar. I can make twice as many posts and three times as many threads by having a level 45 character as my avatar than I could with a level 34 character avatar.