To tell you the truth, I'm sick of this community and there inability to comprehend standard English grammar. To many keyboards members can't spell.
I think one of the other posters was pointing out that your post should have been:
To tell you the truth, I'm sick of this community and
their inability to comprehend standard English grammar.
Too many keyboards members can't spell.
However, if your post was meant as sarcasm we might have misunderstood.
Edit: I think I see what you did there...