I did a position-by-position breakdown of the FAs on the market this year - - before all of the releases today.
You can read it as the entry of 2/27/07 at
The Sports Curmudgeon.
With regard to Joey Porter, he'd be the second best LB available in terms of talent after Adelius Thomas.
Joe Horn does not have a long future in the league as a top-shelf WR, but in terms of ability for 2007, he's better than anyone else out there.