Why aren’t more people signing up?

bin Laden is encouraging Americans to give up their own faith and follow Islam.

“To conclude,” bin Laden says, “I invite you to embrace Islam.” He goes on to say: “There are no taxes in Islam, but rather there is a limited Zakaat [alms] totaling 2.5 percent.”

I guess if you’re Muslim you don’t have to pay taxes anymore? Maybe I’m missing something.
Either way, with that kind of argument I don’t know why more people aren’t signing up.

Thanks to DMN for the heads up