Re: "More data, more data,... "
If even readers of The Register can be thrown by the DC reference what hope does a security service have of being up to date with all the "argot" of a worldwide group of nasties ? How do you monitor a language you don't know ?
My only knowledge of security and police service procedures comes from TV and Cinema, but simply watching the comings and goings at a suspect address seems to be a very common practice. If the suspicions are confirmed then the other means are called in - such as the rooting of suspects' computers etc. It does seem to be a fairly effective data sifting method.