Well....none. If anything, it helped him. From Wolcott:
"Bin Laden might boast that he had achieved terrorism's equivalent of an atomic chain reaction: a self-regenerating cycle of outrage and foreign-policy overkill, aided by anniversary journalism and fuelled by the grim scenarios of security lobbyists. He now had only to drop an occasional CD into the offices of al-Jazeera, and Washington and London quaked with fear. The authorities could be reduced to million-dollar hysterics by a phial of nail varnish, a copy of the Qur'an, or a dark-skinned person displaying a watch and a mobile phone."We lost a lot more than he won, but he did win.