The problem is here, assume that I have a question with title:
||Who created Q2A
||Who created Question2Answer
||Who is contributing to Q2A?
So, if I access one of three URL, it are worked. But it's not redirect to the newest (/1/Who-is-contributing-to-Q2A), so when Google indexing, it will index all three of these. And result is I have duplicate result on Google search. So is this a bug or anything to fix this?