Bitparking bitcoin merged mining pool is pretty cool.
You're mining. Bitcoins / Devcoin / Ixcoin & Namecoin at the same time.
DGM for bitcoins and PPS for the other coins.
http://mmpool.bitparking.com/poolAh, thanks I didn't realize that devcoin could be merge mined. That explains the difficulty and low price (profitability).