I've always been against the idea of being able to edit posts, but the Irresistable Rise of Auto Correct is beginning to change my mind...
Some of the examples I have collected recently:
He put> Benoit
Nspcc> maids
Mnhq> Gwen
Towards> toasted
Someone> dimwit
Get home> gerbils
So if> sonic
This morning, when I typed 'interrupt' with only one 'r', my ipad ignored the correct spelling and autocorrected to 'interior'.
It's often difficult to see the problem on a small phone screen, so you don't notice till you post.
If we did have it, I think it should be limited in time and obvious that the post has been edited, otherwise you get the situation where Tech someone gets the date of a planned shutdown wrong, fifteen obsessives people tell him it's wrong and he goes back and changes it, leaving them looking like the ones who can't read a calendar...