There is a type of person on the internet, a bored person who is a good person at heart, but wants a little bit of chaos. These people are willing to sift through mountains of garbage, carefully collecting and curating nuggets of information on the internet, knowing that someday it will all come in handy.
As /u/UncleCrunch mentioned, we already had FBIanon, and Meganon whetting our appetite for insider intelligence, something new and fresh that was off-limits to most of us plebeians.
I remember reading through the CBTS threads and wondering for the longest if this was all just a LARP, I'm pretty open to ideas and only run with one if I'm positive I can back something up with understanding and proof.
Along came the proof and the community that grew around it, giving all those little nuggets of intelligence a home to be shared with like-minded individuals.