Research suggests that in addition to using text messaging services, terrorists also use Twitter and online chat rooms to communicate directly with their followers or to respond to any question regarding their plans. Jihadist forums and chat rooms are known to have "experts" who directly answer questions about how to mix poisons for chemical attacks, how to ambush soldiers, how to carry out suicide attacks, and how to hack into computer systems. A chat room on the PalTalk index, with a name slightly changed each time but still identifiable, was regularly advertised on jihadist web forums and was used daily to post links to al-Qaeda propaganda videos and terrorist instruction manuals. (Evan Kholmann, "Al Qaeda and the Internet.) Text messaging service is also an easy way to converse, however it can be a bit dangerous as in many countries service providers sometimes monitor the exchange of information between