That sounds like a good idea in general, but read tye's node Re: Could PerlMonks use some cash? (naw) over in the thread Could PerlMonks use some cash?.

As I read that, PM basically has funds more than adequate for its present situation. A great deal of funds would be necessary to have much of an impact at this point. I'm sure there would be a specific plea if there's a specific need.

If anyone wants to add to PM's rainy day fund, I wouldn't discourage it. I'd probably take tye's advice for now, though, and donate any money I was going to donate to a Perl cause to something which needs the funds more immediately.