I agree.
Bad grammer is really annoying. However, sometimes I think posters just make an honest mistake.
For example, this morning after I posted something I noticed that I used "there" when I meant to use "their," and thought to myself "what a moron, I am." Oh well. When you are mentally sounding things out phonetically, mistakes are bound to happen. So, it's another good argument for careful proof reading.
Another thing that's really annoying is rambling sentences that show absolutely no forethought on the part of the poster.
Thanks for the vent session
Alex