Bob Klapisch had a good article about Cameron. excerpts:

Beane produced statistical evidence that no one in baseball saves more runs than Cameron.

Beane: "in terms of value and how much he impacts a defense, is the best player out there."

"I could show you how many runs Mike saves a year, and what he means to a team," Beane had said. "He'd be great for the Mets. That's why I don't want them to get him. With that ballpark, and that [fly-ball] pitching staff, Mike would be perfect."