Are any bounty hunters chasing Osama bin Laden?

The U.S. State Department has issued reward of up to $25 million reward for information leading to the apprehension of Osama bin Laden. Are any non-governmental entities actively pursuing this bounty? How much do you think it would cost to capture him? What about others on the FBI most wanted list? What was the biggest reward ever paid by the Rewards For Justice Program and to whom was it paid?