Does anybody else hear William Shatner in their head when there are too many, and misplaced, commas? "Spock, we must, go to, warp"
Believe me, misuse of commas is rampant, and many times it is because people (not just writers) believe their computer will fix everything that is wrong with their writing.
We ran into this all the time at the school I was at last year. Grammar is addressed in high school, but usually the basic rules are expected to have been mastered in junior high (6-8 grades). There is also the instant messaging and texting problem.
If we can get a writer to read aloud what they have written, pausing every time they have a comma and not pausing where they have not put one, then this would mostly go away.
And don't even get me started on things like 'cause'. Not "I believe in a cause" but used in "I went cause I wanted to".
No, 'cause' is NOT short for 'because'