Found an interesting address ... looks like someone has been giving away $2.5million over the last 2.5 months.
https://www.blocktrail.com/BTC/address/3868tTyX7VvrWaKw3eXex9KyM1jUhDnK2W

They seem to like sending lots of single transactions to a set of addresses with the same first character ... very unusual
Some of it landed in the pool address just now.