When I post comments I proof read them, sometimes several times looking for simple grammar mistakes such as a missing verb or a verb spelled wrong which I then correct with the "edit" button. Do I catch all my simple grammar mistakes? NO. But using the method described above my simple grammar mistakes have decreased considerably since I began posting at SermonAudio.
Oh my, did I write Mr. Gramor? I should learn how to spell. I believe the correct spelling is Mr. Grammar.