The clients have not mentioned any revenue and will inquire in an email to them tonight.
Mouseketrips: I will most assuredly ask the clients about this "article bot" and get back to you as soon as I have a reply from them.
Mouseketrips, I know this is a fairly mute point now, but I asked the clients regarding this "article bot" and they allowed me to convey this back to you.
"The bot was helping to keep and also maintain a high level of traffic to the site via SE's. It was not a standard version of the bot and was highly altered to suit our requirements."