You're not the only one to wonder about this. Whenever I do something that results in something greater than just a few lines, I want to share it. CPAN would be the ideal place, but its infrastructure isn't really suited as it is right now.

One solution might be the introduction of a new top level namespace, like SandBox, or whatever. And in that, anything can be dropped, with even less guarantees than the total lack of guarantees a module usually has :)

Of course, Perl Monks at first sight is a better idea. After all, it has several sections just for posting code. However, CPAN is nicer. Via search.cpan.org, documentation can be read, and any project can easily be downloaded by people who want to try it. Besides that, you can upload distributions, in which you can do a whole lot more than in anything you can copy and paste into a simple textarea.

Strictly, a new namespace isn't necessary. But it would help for scripts like minicpan, so they can easily see which distributions to exclude.