Yes, when it comes to my own posts!! The only thing I hate more than seeing mistakes I have made is to see them in posts I can no longer edit! (Okay there are things I hate more than that, like turtle killers, but I hate it just the same. Spelling is like the one thing I'm able to do right, so it matters to me that I get it right.)
The next person is a stickler for all sorts of rules.