Groundspeak has been alluding to the fact that they want to get a massive number of finds on October 10th as part of their 10th anniversary celebration. It's also National Earthcache day (I had two bumper stickers saying as much sent to me recently from GSA.)
Anyway, I'm posting this out there because I WAS going to do a mini event to try to get people into Fort Smith to do the Busy Day cache I have on 10-10-10, but I forgot to make it, and I missed the deadline, so oh well.
Anyway, On the main forums they are talking about that you might want to cache on the 10th, as they just added the 'souvenir' page, and the powers that be aren't disputing the fact that there may be one automatically handed out to people who cache on that day.
(but if anyone wants to do the busy day challenge on the 10th, go for it. I've got a couple caches I plan on posting that day as it is.)