My estimate of 18 white WRs was based strictly on looking at all the teams, and counting them in my head. I did miss Walters on San Diego, but didn't think I missed any others. I didn't count Salas, because I thought he was mixed.
Another heartwarming story is that Kerry Colbert made the Chiefs roster. An abysmal failure for several years, he returned to the NFL from a job as an assistant coach in college. It's almost as inspiring as Donte Stallworth making the Redskins roster. Way to bounce back from killing that guy while driving drunk, Donte! Yes, they are much more deserving of a spot in the league than Jeff Maehl or Kevin Jurovich.
I agree that this is still an improvement over the days of Ed McCaffrey and Ricky Proehl, but when there is so much awareness of college stars like Maehl, and they still don't even crack a roster, it feels disappointing. And then there is the fact that the competition is so bad- this league is full of horrendous WRs who have proven conclusively that they can't play the position (see Kerry Colbert and too many others).