if you want the most knowledge and passion re: cards fans go to asfn (i think one of the links has been posted).
as for boldin for travis . . . pass the bong.
shelton for travis could happen as green is not enamored with shelton.
most on the board would accept a third for travis.
unfortunately for y'all this is a bad year to try to move a rb. when you consider all the rb free agents (alexander, james, jordan, taylor, blaylock) potential trades (bennett, henry, larry johnson) and the depth at the position in the draft (r.brown, cadillac, benson, reyes, morency, sproles, d. williams, arrington, etc.) it's more of a buyer's market than seller's market.