Not to totally thread jack but I have to admit that when I see someone trying to make a point but they are misspelling an inordinate number of words, don't or improperly punctuate, and they don't capitalize properly, I tend to get fairly dismissive of their point of view.
Exceptions would be for people who English is a second language.
I do tend to give a pass to the obvious typo or the occasionally misspelled word. Your does not equal 'you are'. Neither does ur, yer, etc., internet abbreviations are all good and fine on a text message on a phone but if you have a keyboard in front of you take the extra .01 second to type it out.
If it takes you longer to type it out that that then perhaps you should invest in some Mavis Bacon lessons and not spend time on message boards literally hurting my brain.
(The above rant is not directed at anybody and is intended to convey my opinion and my opinion only and does not necessarily reflect the opinion of Hitech Creations (obviously), the 332nd flying Mongrels, or PETA)