I apologize that my intent for the advice was not stated. And I don't believe I have the patience to debate the subtleties and subjectiveness of (English) grammar. I'd certainly be up for it, but I don't believe that place would be here. Instead, I'll add to what I've suggested.

Punctuation is as much a tool as the words themselves in writing. Learning what phrases need commas and when can help you understand how to form sentences, or to form them without punctuation. Then you can begin to break those rules in order to invoke something in particular. 
Also, I'm not suggesting the memorization of every kind of phrase ever and what kind of punctuation they need. Just some light research could help if you're unsure how to go about wording something. (Maybe I'm the only one who actually studies grammar >.>...I'm a geek)

I'll clarify that when I said "edit" I meant "revision" which is not "to correct." It was to alter its execution to provide clarity, however subjective.


And I will purposefully neglect items that will only further unnecessarily heated debate for the sake of keeping this thread on-topic.