did you not understand the post? if you understand the post then what is the problem? these are not essays for publication in a journal. i suspect most people correct grammar in here because it makes them feel smart and better than others and not for any other reason. i teach at a university and grade papers (including for grammar) for a living. i'll be damned if i worry about it in here. so, you should go ahead and have some fun dissecting my sentences and complaining about my comma usage. i hope it makes you feel like a smart guy.
G_D