One I use for my guild website is called magelo. They have the option of creating avatars and signature images for WoW, EQ, TOR, and Rift. You can make some really gorgeous ones too, but like protein said, you can't use them here unless you have premium.
Guild Wars 2, Crystal Desert server:
Inga Freyasdottir, lvl 40 Norn Mesmer
Deathbringer Kaami, lvl 16 Asura Necromancer
Popina, lvl 15 Asura Elementalist
Althaia Willowbark, lvl 7 Sylvari Engineer
Maeve Amnell, lvl 4 Human Guardian The MMO-Zam's FB group.
Please message me first so I know who you are.