One possible approach: since posts in Code Catacombs and Cool Uses For Perl are so rare compared to other forums, front-page them automatically.

Not really sure: while precious gems like the one I mentioned can be found there, also pure pieces of crap including hits in the Worst Nodes lists tend to get posted there. Perhaps the fact is that on the frontpage at the top one can see the questions, then at about 2/3 of the whole page below, the meditations, then close to the bottom, obfus and PMD. No code contribution at all.