Terrorists also Twitter?

Army says that Twitter, the fastest-growing social networking site in 2008 will be utilized by nasty Terrorists as well. There are potential web technologies for terrorism spreading. One of Twitter's ability is publishing anything in instant concerned US Intelligence that Terrorists might use it to organize attacks or spreading extremist ideologists faster and easier than before. For instance, activists used Twitter to organize gathering at the Republican National Convention last September. Other Internet technologies mentioned including Facebook, Myspace, VOIP, mapping tool like Google Earth and navigation tools.