It seems to me similar to the idea of having two emergency numbers for calling the police. One for the small emergencies and one for the serious emergencies
But seriously, here are some disadvantages:
- It splits up the helpers.
- perl users need to know two websites and ...
- decide which one to use depending on the problem. Don't think that will work. For a beginner any question he can't answer is advanced
- and they need an account on both if they have newbie and advanced questions
- A lot of people like perlmonks.org because they can help AND learn. Most of them would have to read both websites
I'm not saying the idea is bad, but there are definitely disadvantages