The second part of the article makes an interesting point, which is that for all the skill these guys displayed, all the calling card numbers they stole and all the trouble they caused (my personal favorite being sending a police department number to a crapload of pagers after a cop gave one of the Phonemasters a ticket) nobody has heard much about this case.
The article theorizes that the reason is that the current media darling in terms of "hacking stories" is web defacement. Because the Phonemasters' activities had little to do with the Internet, the media isn't interested. Thus the script kiddies get the press while other groups with far more knowledge and potential to do harm (Brian Martin of Attrition.org points out that the Phonemasters should be admired for their restraint) are virtually unheard of. Interesting article with an interesting thesis. Definitely worth a read.