DPR = Dread Pirate Roberts = founder and main operator of Silk Road drug trafficking site that buys/sells things with BTC.
Nice article in Forbes about him.
I don't have nearly as many. He must be the richest person on Earth, then. Is there anyone else who publicly owns 100k
BTC or more?
Wall observer thread regular "Loaded", 40K provable cold storage, more than 100K claimed.
About DPR: of course, since when is the world's largest public drug market owner not the richest person?

EDIT: I think there is at least a hint of possiblity that DPR is actually Satoshi.