Here is a typical sentence with correct comma placement that would drive me crazy: Blah, blah blah blah, blah, blah blah blah blah, blah, blah, and blah.
The problem iwith what you just posted is that your sentence has no verb so it cannot be a sentence. I think a post here, and I'm very guilty here on runon sentences, misplaced prepositions, etc, I think i've been called himorless and other things as well, but posting here is something I write quickly, often and incorrectly using it's for its and too for to or two. For my professional work, I want a proofreader to catch these things, along with other incorrect things, from obective case to transitive and intransitive verbs. I prefer to see the same correct grammar in what I read or hear; the illiteracy in tv writing and the news is appalling to me.