I tend to prefer text emotes (

) to picture ones

-)) for the simple reason that nine times out of ten, the pictures will knock the line heights out of whack and make the post harder to read. It's not just forums where I have anti-picture-smiley prejudices, either -- I've turned them off on my IM client as well.

That said, I do use quite a lot of the text ones (;P is possibly my favourite), and it doesn't <i>hugely</i> bother me if there are picture emotes in a post, as long as it's not excessive.
... and yes, I just

'd twice in a fairly short post without even thinking about it. I suppose that proves my dedication to the text-emote cause? Or just that I can't help myself... ;P
... all right, I'm going now, before I do it again.
Bah!
...
xD