Any minor league deal for a guy around 30 or younger with some sort of major league talent / success is generally a good deal.
Hence - good for the Nats signing Laynce Nix.
I'm busy today so quickly - he's a good field, can't hit lefties batter. Which spells trouble for Roger Bernadina or would spell trouble if Roger was really a major league starter - which he isn't, so I guess it spells "reality check" or something like that.
Don't be fooled by last years stats, he had some crazy luck with his batting average for balls in play. His career numbers are just under .300, and this usually falls a bit as you age and lose speed. Last year he had like a .360. Not going to happen. 2009 is more of what you can expect, and what that is is a guy with decent pop against righty pitchers. A platoon of him and Morse could be extremely interesting.
As the Nats keep putting together a traditional bench - my view of the Hairston signing becomes dimmer and dimmer. Because he can play infield and outfield well enough, he offers a National league team flexibility to use a bench spot on a pure hitter - let's say a Russell Branyan type. A guy that can't play a position but can slam a homer in a pinch. If you aren't going to use that flexibility to your advantage then Hairston is just a poor, old, kind of expensive MI bench player