http://www.fieldgulls.com/2014/11/4/7157681/seahawks-tony-moeaki-free-agent-nfl
Tony Moeaki is a guy who has had HORRIBLE, and I mean absolutely HORRIBLE luck in terms of injuries.
Before anyone says, "He'll never stay healthy!", let me say this, you're may be right, but if he does, he's a VERY nice addition!
Adding an athletic, fast, good hands tight end, one who is a good blocker as well is never a bad idea.
Especially with Uke Wison dropping everything in sight. (I've come to the belief that he just cannot make contested catches.)
As for the other signings...meh, whatever. I don't get the return of Walters myself, I guess the coaching staff likes him, and the kid from the Jets, who they took in round four? He seems like a smaller, slower, less elusive, less talented, less good slot receiver who will likely not be able to stand up to the NFL beating he will take... But hey, look under every rock right?