How do you turn an eight-year-old arrest into some major cash for charity? John Mayer did just that when he offered up $25,000 to TMZ king Harvey Levin's charity of choice, if the gossip blog could produce John's 2001 mug shot.

This morning the crooner tweeted the challenge out to the world, and TMZ called his bluff, producing the mug shot this afternoon (btw, Mayer was arrested in 2001 for speeding and driving without a license).

Harvey Levin has said that the money will go to an "animal charity" and tweeted back at John to "Pay Up!"

What do you think of Mayer's challenge--do you think using past mistakes and gossip blogs to benefit charities is the way to go?

You don't have to donate big bucks (um, or get arrested...) to help animals. Find out how you can get involved in animal welfare.