It wouldn't bother me quite so much if I only saw l33tsp33king semi-literates using it, but I've seen it otherwise articulate, well-spoken, grammatically flawless writers use it as well.
Come on, people, is shift-7 that hard?
D&D
Deeee-Ampersand-Deeee.
Say it with me now. Am-per-sand. Aaaaam-perrrrr-saaaaand.