No, but activity and join date are a good indication of how much you are on.
Spelling and grammar are a good indication of general aptitude as well.
I took the liberty of helping you out with your last post.
"Not much.
Who says this my only account, huh? Take that into consideration.
P.S. Activity on forums doesn't mean much about in-game abilities."
17/24 words correct. Decent, but you still need some practice at the English language.