What is meta? ×  Questions often get edited after you answer
them. Some edits are insignificant, but there are edits that
change the question significantly enough to warrant a change of
the answer.  It would be nice to get notifications of edits that
could potentially change the relevance of your answer. This
would give you an opportunity to improve your answer in response
to an edit.  However, there is a clear danger of "false
positives" here: too many notifications reduce the chance of
spotting the relevant ones. That's why I think that
notifications should be added only when    1. The edit to the
question is done by the author of the original question1,   2.
The edit resulted in creation of a revision, and   3. The edit
is posted after your last edit to the answer.  The first
condition makes sure that the edit could be potentially
significant; the second rule reduces the chance of duplicate
notifications; the third one removes notifications when the
system is nearly certain that you have seen the edit (bec