This has really only happened twice in the history of the web site. The first time was in 2003 when we started to get enough money to fund some upgrades that Tye proposed. Since that time, the donations virtually dried up.
Recently, however, OíReilly has started running a few banners, putting an extra $3k in our pockets. We are discussing some possibilities, but figuring out where to spend money in an all-volunteer community is always a big challenge.
To clear another thing up: donations earmarked for PerlMonks have been/will be spent on PerlMonks. There hasnít been much activity recently since there havenít been many donations and we need a reasonable pool of cash before we can start to spend it.
Though I would like to make one request on this topic. When making a donation to perlmonks, please follow the link from the donations page instead of just sending a paypal payment to firstname.lastname@example.org. If you just send money to that address, it is really hard to tell which fund you are targeting. By using the web form, you guarantee that your money is allocated to the correct fund.
Hopefully that clears up a couple of the questions raised in this thread.