Tim Tebow used to send Biblical messages via his eyes when he played for the University of Florida:

Now, he’s a third string quarterback for the Denver Broncos, behind Kyle Orton (who’s starting) and Brady Quinn (#2). You could arguably place him #4 behind practice squad quarterback Adam Weber, too.
Fans — mostly Christian ones, I presume — are not taking that lightly.
Gregg Doyel at CBSSports.com explains:
Tim Tebow is a chemistry killer, a cancer, on an NFL team. And it’s not his fault. Honest to God, it’s not.
But it’s the truth. Tim Tebow on your football team is a killer, something that goes way beyond distraction and shifts into disruption, or even destruction.
…
They love him because he’s Tebow. The All-American boy. The Christian. The WASPiest WASP in this great big WASP nest we call America.
And because they love him in Denver, they hate Kyle Orton. They boo Orton even as he’s throwing for 304 yards — yes, he had a bad fumble — but not just because Denver is losing. They boo Orton because he’s not Tim Tebow.
Tebow’s fans want him to play in the game… despite the fact that he’s not the best quarterback on the team. He’s not even the second best quarterback on the team. But, while Doyel never says this outright, the Jesus People would rather have their team lose with a Proud Christian at the helm than win with anybody else.
Recently, some fans even bought two billboards worth $10,000 pleading that the Broncos let Tebow play. The actual ad isn’t available yet, but ESPN posted this mockup of what it might look like:

They basically want to give Orton one more chance this weekend. If he screws up, though, they want Tebow to replace him. Which, as a sports fan, makes no sense whatsoever. (For what it’s worth, Tebow dismissed the billboard, telling fans to give their money to charity instead.)
Doyel doesn’t seem to care one way or the other about Tebow’s faith — but he implores Denver fans to understand the chaos they’re causing:
Do you know anything about football, Broncos fans?
Apparently not, and you know even less about human nature, because all of this Tebow talk is killing your team. You have Orton being quoted during preseason that he doesn’t care what the fans think, a sensible train of thought for an unappreciated quarterback but a stupid thing to say for public consumption. You have coach John Fox being quoted this week that he didn’t hear the fans clamoring for Tebow on Monday, and even going a step farther and saying the atmosphere was the best he’d ever seen in his 23 years as an NFL coach. That was a blatant lie, one I can’t believe Fox told with a straight face, but he’s playing to his audience. He knows Broncos fans can’t handle or even digest the truth. They want to be lied to, whether it’s Fox telling them they were great on Monday or whether it’s their own heart telling them Tim Tebow would help the team win games.
He wouldn’t, or he’d be starting over Kyle Orton. Don’t you get that, Denver fans? As bad as Kyle Orton may be, as bad as Brady Quinn definitely is, Tim Tebow is worse.
But still they’re clamoring for him in Denver, blind to the fact that they aren’t wreaking change. They are wreaking destruction.
Somehow, I think this mindset also explains how George W. Bush got elected…
(Thanks to Alex for the link)