Who is Handsome Rob?

I came across this on Facebook

"Anyone who knows The Killers well or has their live DVD, you will know who I mean when I say Handsome Rob, right? Well Rob has a band, who are called Most Thieves, and they're currently writing some great music, so, if you're interested, follow them on twitter for more news. www.twitter.com/mostthieves"

And it went completely over my head.