This question already has an answer here:
Ok, this is a really simple one and will be well worth doing IMHO.
When you put a link in a comment you get something like this:
Pretty similar (if not dupe) to stackoverflow.com/questions/410085/… – cletus 1 min ago
I'm proposing that when you post a link to the same site, instead of using an abridged URL, use the question text so the result would be:
Pretty similar (if not dupe) to What reasons are there NOT to use OpenID? – cletus 1 min ago
which is much much more useful.