Meditations seems to be good for this. Consider, for example:

• rtfm moment...
• Spaced Out
• Super Searching before you post
• TIMTOWTDI -- so long as it's not my way

--f

P.S. The Guide mentions this, as does the link at the bottom of nearly every node. You know, the one that says:
   Not sure if you're posting in the right place? Check out Where do I post X?

I guess I was looking for something more along the lines of a hints/tips page classified maybe by Perl function or module, or by task - you know, Perl Cookbook style.

I *did* check out the Perl Monks guide to the Monastery and Where do I post X? before asking, but nothing there seemed right. For example, the link to Meditations refers to things "amazing", "mind blowing", "epiphany inducing"... I was looking for more of a "forehead slapping", "groan inducing", "why didn't anyone tell me I shouldn't change $_ or chdir in a File::Find subroutine" kinda page.

You might also consider to write a Module Reviews along with samples which make clear where the points are one could get "burned".
Another possible place seems to me is Code Catacombs at least to post working code. There just comment all that seems important to you.
Help (you provide to us) like this is very appreciated.

Have a nice day
All decision is left to your taste

Adding up all the time one could spend looking for tips on 'what to avoid when...' and 'how to use ...' , you'll see that is often quicker to just get in there and start implementing rather than looking for the howto's and howtonot's. This is also more valuable for yourself because the things you learn the hard way will stick forever!
Having said this, bashing your head against the wall for too long can cause permanent braindamage and is thus not desirable for any Monk... PM very often provides one with the right helmet to prevent this from happening.

good luck

Jorg