I do also. It is usually only literally 1-2 spelling errors, or some problem caused by my latest foible(spelling what I kind of hear in my mind, as opposed to subconsciously thinking about context as I used to.) Sometimes it is a feeble attempt to clarify things, or counter an argument I KNOW would otherwise occur.
It isn't like I LOOK for this stuff after the fact, I just happen to notice, or even remember.
Sometimes I post a double entendre, and try to remove the confusion before anyone misinterprets. Sometimes, it is merely bowdlerization.