I just want to know, until now, every time I edit an answer (of my own) I go and notify the OP by posting a comment something like: hey look, I edited my answer, why don't you take a look now and see if you like it? or just answer edited.
So I'm wondering: When I edit an answer, is the OP of the question notified about that?
As implemented from notify-us-when-one-of-our-posts-is-edited the author of a post is notified when their post is edited. However the OP of the question is only notified when the answer is first posted, subsequent edits to answers do not trigger notifications; this means you should try to make your answers as good as possible to start with and if you do make substantial additions to it later it may be worth manually notifying the question OP.
There is however a feature request requesting that answer edits trigger notifications for question OPs
post edited