Cyber Monday certainly has created a good share of 503 status codes (that's a Service Unavailable for those that don't speak HTTP :). I experienced some major issues today, most notably with Land's End. Their servers were up and down for hours, with all sorts of messages.
I just got an email from Google stating that Google Checkout transactions will be free until the end of the year:
From November 8 through December 31, 2006, we'll process all of your Checkout transactions for free, even if you aren't an AdWords advertiser.