current legislations fails to make anything illegal that wasn’t illegal already. So, what exactly would a US based webmaster be aiding and abetting?
The legislation makes a new crime of accepting US citizen money for the purposes of internet gambling, with a few exceptions (lottery, US approved horse racing).
I can see certain prosecutors attempting to charge advertisers/affiliates with aiding & abetting the money process by providing the original link to these sites, although that still sounds iffy to me if the money was a flat fee up front. Even moreso, I can see them doing the same with the accepting money part if it involves sharing revenue in any way – CPA or otherwise.
Affiliates on revenue share are accepting 30%, 40% (whatever the amount is the program gives you) of the newly illegal US money. The only way I can see around this is if the sites start giving out prizes instead of money that has to travel through the banking system for both the players & affiliates. This would not work for casino games – only poker tournaments probably. And I’m not even sure that would be legal – just something off the top of my head. For someone like the Professor, they would probably have to pay him with land 
The article covers the perspective of the online gambler well – probably nothing has changed legally for them. What it means in real terms though for a good poker player is entirely up to Neteller. I don’t have much doubt that the pool of US Party Poker players will find a good alternative to play at. But if Neteller & similar sites are no longer an option, there are not going to be enough fish to make it worthwhile.
This law screws the US affiliates in every way . Either you will live in fear of being prosecuted, or the majority of the market has vanished overnight. And I would say even if you are unafraid of prosecution, if the second thing happens it may make you wonder if the risk is worth it then.