they claim to have arrested 40 people based on the tips they received from the public. journalist david kirkpatrick writes for the daily beast. he is also the author of the facebook effect. david kirkpatrick joins us tonight from new york. david, thanks for joining us. how are you doing, sir? good to be here, don. thanks for having me. is it really a double-edged sword here? i heard the january 25 thing on twitter, he said i credit facebook. i have to give a lot of credit to facebook. i want to meet mark zukerburg. what do you believe about that? well, i think the odds are in the favor of the individual in the era of facebook. so even though it is a double edged sbo ed sword, we are goine enormous changes in the world. facebook effectively gives every individual a broadcast platform