On this community I don't correct anyone because as you say, it could be embarrassing.

Do you remember a couple of years ago when the "a" key on my computer fell off? I had to substitute "@" until I got a new computer. Nobody here s@id @nything @t @ll @bout me using "@" @ll the time. In f@ct when I did disclose why I w@s posting in such @n odd m@nner some people here s@id they noticed the ch@nge but thought perh@ps I h@d developed @n OCD or something. Too funny!