A massive embarrassment for President Obama is something al Qaeda would dearly love to cause. So holy warriors, al Jazeera is waiting. Send them a video of Osama in which he makes fun of Obama's claim and demonstrates beyond doubt that he's still alive.
It is time to put up or shut up. Failure to do so indicates bin Laden is either (a) a coward who wants the world to believe he's dead, or (b) in fact, truly dead, as claimed.