For phone phishers there are time-wasting systems that effectively just play random noncommittal crap at the phisher whenever there's a gap in the conversation. These do tend to string the average microsoft support scammer along for quite a while, since such scams don't attract exactly the greatest brains in the world at the sharp end.
For email scammers, similar spoofing systems exist to string them along until they get bored with trying to out-think an infinitely patient machine. Alternatively quite a few people view scammers like this as entertainment. The Scamorama site is one such; some of their better efforts include pretending to be a man who was "a failed recipient of a whole-body transplant", who ekes out a miserable existence on a life support system in a university cellar as a disembodied head (typing with his nose). Needless to say, the efforts of the scammers to extract money from this poor chap are long-winded, amusing and ultimately fruitless.
Biting the hand that feeds IT
