To typo is to be human.

We all do it and should not be ashamed.

I try to correct them when I see them but to be honest if a post is understood without the need for clarification do we have to be spelling and grammar pedants on a discussion board?

As nerds we have more important things to be pedantic about like the number of stars on Spinda Carter's drawers.

Also one person's spelling mistake is another person's regional spelling variant.

I'm not going to type 'color' unless it's in a book or film title or I've made an unspotted typographical error.

Some people like to develop an idiom for themselves and while it may be annoying to some (and they have every right to voice that annoyance) as long as information of interest is being conveyed I can't see a problem with people staying 'in character' for the duration of their stay.