It is called correct punctuation!
It's not, though, and as a recovering commaholic it's like being a former druggie sitting around in a crack den for me. I find myself going over my own posts and removing any unnecessary commas - and believe me, there are a ton.
This is not a bust on you; you may comma as you see fit, of course, because this is not English class. This problem belongs to me and is not your problem.
Carry on.