It's getting harder to completely re-vamp peoples bad spelling habits so here's what i'm gonna be on the lookout for.
Your, you're, don't etc. Basically combination words that people often screw up.
To, too, two etc. Gradeschool errors that make the poster look like a two year old with enough brains to barely function on newschoolers.com. (That means you lil-g)
I don't feel that I need to correct common capitalization errors and improper comma usage because people are still able to legibaly read that persons post.
PS: Don't bother spellchecking my thread.