Take a look at the transactions. Each one has exactly two outputs, one of which is 0.05 BTC. So isn't this just the Bitcoin Faucet dispensing coins to the crowd of people who have just arrived from Slashdot?
Looks like it is.
Is that someone abusing the bitcoin faucet?
0.05 US dollars is a lot of money in some areas especially if you automate that or just sit there filling out the captchas.
0.05 X 20 every 10 minutes is a buck. $6 an hour is a good wage in some areas...
Today's transactions looks more random than yesterday, maybe because of the volume and the way transactions are displayed on bitcoinmonitor.com .