There is no solution at present. If it's the sponsor doing it, he's doing it to protect his traffic. If an affiliate does it, he's doing it as an alternative method of getting traffic.
So far no one has come up with anything approaching a solution and the "Expert" I contacted could be working for the adware companies. The way she scared from downloading and testing the scripts. Or what ever they are called.
So I'm going to be devils advocate here and pitch the other sides argument.
10 or so years ago the business was a few sites converting at ratios sites would give their right arm to get today. Lot less traffic, lot less competition and no affiliates to speak of. Then it all changed and the situation was live with it, use it or die.
So now we have a situation where ever affiliate expects 50% of a paysites revenue from joins, free hosting, free content, free galleries, free banners, bonus payments and more. Plus marketing and endless support. So what do affiliates cost?
Let's say 33% of a sites joins revenue or to keep it simple $10.00 a month a sign up. With all the support it think it might be even more.
So can a sponsor get a sign up from companies like Zango for $10.00 or less?
Who loses?
The sponsor. Not really the traffic exists and unless you believe all the free content on the Internet generates rather then hurts sign ups removing all the free content would be a help.
The surfer, no he can still find his porn.
The TGP site and LL owner. Yes, but he will be intelligent enough to realise this is the time to compete. Some will and some will not.
Affiliates, see the above.
Will adware companies screw with surfers computers? Only if they want to scare the life out of the surfer from using them.
And affiliates before you argue that the traffic will simply dry up because you are not here, let me say this. You do not create traffic, unless free porn is contributing rather than hurting the Adult Net, you are merely directing EXISTING traffic.
Yes many of you will suffer, however if you had a site paying you $40 and a site paying $35 for exactly the same join/traffic/etc. where would you send it? Sponsors are doing the same.
I WAS MERELY BEING DEVIL'S ADVOCATE FOR THE OTHER SIDE, I WELCOME THE ARGUMENT FOR THE PROSECUTION. 
Personally I think free porn does create traffic and joins, and I have stated so many time. I believe the affiliate situation levels the playing field and allows many site to exist that would not survive under other circumstances. But I was not pitching my beliefs.