That comes as a relief to me, since I feel the same way Kyuusai and Skane do. (This is silly, I know.
) When I read a Skane, Ascaloth, FatPianoBoy, NoSanninWa, WanderingKnight, etcetcetc post, if I see their "usual" avatars, it's fine. If/when they change, it really does throw me off a little.
Interestingly enough, the one who escaped this was Kyuusai. Though it wasn't the first avatar I've ever seen him with, I tend to think of his hazukashii pink-haired Miyuki avatar whenever he's mentioned. I think this has more to do with how both Miyuki and Kyuusai are living wikis than anything else.
(OK, I'll stop here before I get virtually beaten up.
)
Myself, I'll probably always have a starey-eyed girl avatar. I switched to a cranky Kagami ava once and was told it didn't suit me... Bleh. Starey-girl for life, I guess.
Here's one of the first avatars I've ever used online: