Great News!  It appears that Baseball Prospectus is allowing all of their content to be accessed for free all week, including all of their PECOTA data.

www.baseballprospectus.com

For those of you too cheap or otherwise unable or unwilling to subscribe to BP, I encourage you to check it out.  Very informative and well laid-out.  Their articles are an integral part of my daily routine, as my yearly subscription is my dad's perpetual Christmas gift to me.