Chalk me up as one who gets overly critical of many FA signings. But sometimes I will admit the failure is on the part of the player and not on the notion of bringing him to Boston. Carl Crawford was a massive flop, but I did understand why they signed him. Or at least I had my own completely unsupported theory as to why the move made sense...
I hated the signing from day one.
CC had bad splits and 7 years was 3-4 years too long. (I remember calling him a "glorified platoon player" on that other blog.)