yeah it is ProShares UltraShort 20+ Year US Treasury ProShs. so it shorts the us treasuries.

Peter said this on Jan. 1

"PST and TBT – I said a few weeks ago the play for 2010 was to be short the treasuries. We’ve a big bump up in rates and while I think this is just the beginning of a bear market, I wouldn’t chase these or other short plays for the moment. Buy on pullbacks."

so peter thinks its the play for the year and DR thinks its a decade play. I figure its time to get onboard.