Throughout the Kevin Colbert tenure as the General Manager of the Pittsburgh Steelers, the black and gold was very rarely fully active in free agency overall.
Of course, names like James Farrior, Jeff Hartings, Ryan Clark, DeAngelo Williams, and James Harrison stick out for the Steelers as free agent signings, but in recent years those could include Joe Haden, Steven Nelson and even Mike Mitchell. That just shows how conservative the Steelers were in free agency, opting to build through the draft and retain their best players, rather than spending freely in free agency.
Turns out, that approach worked more often than not.