Didn't get around to taking advantage of Best Buy's new Bieber / Ozzy-promoted Buy Back program before the post-Super Bowl free-for-all period expired on February 12th? Then it looks like you're in luck -- the company's just announced that it's extending the free offer until February 26th. Unlike like the previous promotion that applied to a whole range electronics, however, this latest extension only covers smartphones and tablets, although you can obviously still purchase Buy Back coverage for other devices