The comments after that article were amusing--I think one commenter accused another of failing the Turing test. See alan tiring (recently commented upon) and see information theory (which I haven't commented on yet, but I will soon--if only to prove I'm not a robot).*
"As the Daily Kos has reported, the emails show that: - companies now use persona management software, which multiplies the efforts of the astroturfers working for them, creating the impression that there’s major support for what a corporation or government is trying to do." - George Monbiot, Robot Wars, monbiot.com, 23 Feb 2011.