SimonTheBeetle: I'm eager to see what it would try to advertise or sell, probably one of those gambling sites
To be honest, from the similar posts I've seen here, I don't think it (they) is (are) trying to advertise or sell anything. My guess is that it is being used to test some sort of word/sentence/conversation recognition software and to give a meaningful reply. Maybe something to be used in future AI, to be able to hold a meaningful conversation, something similar to the robots in the film I Robot. Then again, I may be totally wrong, but if I am wrong then I think it is something they should be doing.