I used to first post and then edit, just because I never seemed to notice most of my mistakes prior to posting.
Recently, I have stopped that though, since my browser now has some convenient (and, without it, I would have mispronounced this word) spell check device in it. That only leaves my terrible grammar, which is inevitable when having English only as the second language and never having been in an English-speaking country - except for a one-week class trip to England where I did not exactly speak English a lot - because traveling is so damned expensive.