Slush:
http://blockchain.info/block-index/385234/00000000000000f595dabc67b09229d6cd93224da85c46415f5c782e09ab576f
It's not registered but I think it showed up for a short while just before 237575 was found. Guess we got too lucky for our own good.

This was mentioned a couple of pages back but with the activity here it's easy to miss it. Time for a separate "chat thread" perhaps?