There's been an awful lot going on at Fangraphs and I can't keep up with it all. Dave Cameron is coming to my rescue, though. Here is his first blog entry describing how the batting portion of win values is calculated. Of course, to really get it, you'll need to understand wOBA and wRAA. Everything new is new again.
Dave was called a "national treasure" by Rob Neyer. Seriously. Comments about this article can be sent to him through the miracle of e-mail.