I have a personal policy, that involves eschewing e-contact with all people who use text speak, can't spell, and abuse emoticons (you get one per conversation. This is a strict rule that is enforced with real-life slaps once we finally meet up). That said, I choose to avoid the bad spellers (Firefox has built in spell check. Use it, please), the terrible grammarians, and emoticon abusers. I don't seek them out or, God forbid, try to fix their mistakes, like these Twitter grammar jerks.
And yes, I realize that someone who has a blog dedicated to commenting and occasionally judging stuff (who, me?) is throwing rocks from a glass house, but seriously, this is like going to visit the monkeys at the zoo and complaining when they throw shit. It's what monkeys do. Sure, there are some non-shit flinging monkeys, and some grammatically correct Twitter-ers, but not many.
Plus, seriously, it's like bailing out the Titanic with a thimble. Smoochy was wrong: you can't change the world, and you also can't make a dent.