This is a great move by the Bills if you ask me. He automatically becomes the team's best LB; that is how bad the LB'ers have been this year. Even if he is a "shell of his former self" as some posters are stating, he is still upgrade for BUF. He is also a FA after this season so if it doesn't work out, you're not stuck with the guy
This a VERY BAD defense. A lot of you have probably not watched much of their defense this season. I have seen every snap. They are just terrible. The run defense is non existent. They have nobody to set the edge in the run game. Chris Kelsay looks completely lost at OLB and should never see another snap there. There is also no pass rush. Merriman's forte has been his pass rush ability.
Nix is also very familiar with him. He was one of the people involved with selecting him at San Diego. He knows exactly what he will be getting with him in the locker room and on the field; he felt it was worth picking him up.
The money is not an issue whatsoever. I always laugh when I see people on boards like this worried about spending a couple million dollars (1.7 in this case) on a player. Who cares?? Its the owner's money. There isn't even a salary cap this season

Even if there was, the Bills would still be well below it. I am all for spending more money to bring in talent; this team desperately needs it. The owners don't even pay the majority of the players salaries; nearly all of it is covered with the broadcasting deals the NFL makes.
Addressing losing a roster spot, didn't anyone bother to look who they placed on IR to make room for Merriman? I'll tell you. Cornell Green. Possibly the worst OT in the league. He was getting beat like a rented mule out there. It was embarassing to watch. He is being out played by a undrafted FA out of Georgia Tech, Cordaro Howard. I am happy as a fan knowing that there is no possible way Cornell Green can suit up again this season.
Overall, this makes perfect sense for the Bills. He seems to play with a lot of energy. The Bills desperately need player's on defense that can fire up the rest of them. Someone to hold them accountable on the field and in the lockeroom. A Ray Lewis type player to really get them going on game day
I am also interested to see how the affects Aaron Maybin. He has been a huge disappointment so far (Inactive past couple games). Maybe Merriman can help set a fire under him and get him headed int he right direction.