One thing I do have to say is that, in regards to 'net speak' (you know, the whole 'howz u? i iz gr8' thing...) you can remedy it somewhat just by setting an example. It's true to a certain extent; I refuse to lower the level of my spelling to fit in, so now other people seem to feel the need to type correctly. I can (but shan't) name about five people who've I reckon I've influenced by this in some way. (Either that or everyone has gained a subtle sense of humour and is making fun of me over this, although I hope that isn't the case!)
Just thought I'd share that with you, since without it, my introduction sort of seems a bit thin.
(oh, and those avatar things a while back - the 'I'm going to have to beat you in the name of grammar' ones, or something like that, are great! Mind if I borrow for personal use, i.e. for use on my LJ icon?)