Comment eBay really needs to authenticate autographs (Score 1) 16
Search on eBay for some of the most-popular sports cards out there, and you'll see most of them are already authenticated and graded by the likes of PSA (the most-popular), Beckett, and ISA. In fact, it's almost a requirement among buyers and sellers of rare and valuable cards. It seems weird for eBay to offer to do this, but according to eBay's website, this is a free service. No harm, no foul, I guess?
What eBay should be doing is offering an authentication service for autographs. Anyone with a passing interest in sports memorabilia knows about the FBI's Operation Bullpen that targeted a ring of notorious forgers. Many of these forged autographs wound up on eBay in the late 1990s and early 2000s. I know this, because one of my relatives bought a Lou Gehrig autograph that turned out to be a fake -- despite the certificate of authenticity included. All eBay did was ban listings from some of the authenticators implicated in Operation Bullpen, most notably Donald Frangipani, the same guy who "authenticated" that Gehrig.
TL;DR -- A good market already exists for authenticating sports cards. eBay should focus on combating fake autographs instead.