Don't worry if the name doesn't sound familiar. There's a Chiefs connection - Palko spent some time on the Cardinals roster after the 2008 season.
Palko was originally an undrafted free agent signed by the Saints in 2007. He spent much of the year on the practice squad (and some on the active roster) before being released.
He was out of football in 2008 until signing with the Cardinals in December of that year. He was with the club until September cuts at which point he was once again not on a NFL roster.
He moved to the CFL after that and eventually landed with the Steelers in November of 2009.
And, as Looney notes, Palko comes from the University of Pittsburgh, where he used to throw to a receiver named Larry Fitzgerald. He's also famously the one that caused Joe Flacco to transfer from Pitt to Delaware.
This makes four quarterbacks on the Chiefs roster: Matt Cassel, Brodie Croyle and Matt Gutierrez, in addition to Palko.