Unfortunately the offer is not worth the tape it is recorded onto, it is merely a obviously quite effective way of enacting the oldest military strategem in the books, that of Divide and Conquer, bin laden is relying on the wests own policies of free speech to defeat itself just as ho chi mihn did in the vietnam conflict, the biggest advantage that fundamentalists have over western powers is their total and complete belief that they are right and as is the case with all fanatics they are unwilling to even entertain the fact that someone elses opinions might also be valid, the biggest problem with this present world conflict is that both sides have diametrically opposing beliefs this renders negotiation impossible as there can never be a middle ground for comprimise.