I don't think Boldin is an upgrade over Moss, and Moss didn't have a significant impact on the 49ers offense.
Because the Bills don't have a QB and therefore will not be a Super Bowl contender in 2013. Why waste resources- even just a 6th rounder- on a guy who will probably retire after 2013 unless you're a Super Bowl contender?
I don't think Boldin is an upgrade over Moss, and Moss didn't have a significant impact on the 49ers offense.
I don't think the GM of the Baltimore Ravens cares about whether or not Boldin gets to a contender, unless he has some sort of no-trade clause in his contract.
Well Harvin is a douche, injury prone, and the whole migraine thing. I'd rather have Boldin.
That said, again, I would love to see Dallas bring in Pollard. He's 29 so he's still got 2-3 years left and can really challenge/teach the younger guys in Church and Johnson. Reeds great but Dallas can't afford him ( I don't know if they can afford Pollard).