Much to my chagrin, Pro Football Focus is doing away with their signature stats. Well, not completely. You'll still be able to access them with a special media account that is "substantially more expensive" according to the email conversation I had with the guys there. Waiting to hear back how much more expensive we are talking here.
In it's place they are rolling out a new grading system that if you have been to the site, it's the top ten lists they have listed by position over the last couple months. One stat, one number, that encompasses everything. Rather than being able to look at a number of stats and see where the players strengths and weaknesses are. Looks like if you went to FanGraphs and all that was listed was WAR.
The email also said that 19 NFL teams uses these grades for evaluating matchups. I guess that's supposed to give it validity. But I checked out their trial version, It's not complete, but I think It seems pretty weak. For example, you pick a matchup, I chose Ravens/Bengals, and you get to see that Steve Smith has an 82.7 grade. Pacman Jones opposite him has an 80.8 grade. Advantage Smith...I guess. Marvin Jones is an 80.5, and Lardarius Webb is a 74.1, Advatage Jones...I guess.
I hope the full version offers a hell of a lot more when it comes out.