One of the more interesting points raised in these threads other than the various companies stealing traffic etc is how many people don't seem to have a problem with the use of scumware per se. Seems to be an awful lot of people worried about the lack of sale tracking only and not the fact that a handful of bottom feeding adult companies are using Zango and similar and thus supporting those companies and tactics.
Again though it goes back to the short-sightedness of so many people in porn, no matter what their turnover and it will eventually bite them in the ass. I'd go as far as to say it has already started to do so.
My only 2c in this thread as people like Jayeff and Will make far better points than I could. Many people could learn a lot from the content of many of Jayeffs posts especially.
Oh - and a final point for the handful that seem confused. Stop pretending that most Internet users have the intelligence to realise the crap they're installing. I would happily take a very large wager that 90%+ (probably much higher) of Zango 'users' are completely unaware of the shit they have installed on their PC and would not have done so had they realised.