If i count in my virtual console version i've bought the original Super Mario for the original NES, the Gameboy Color, Gameboy Advance and as an add-in for the Nintendo DS. I really can't remember if there was a Gamecube installment on a special disc or not, but thats beyond the point.
I paid to play this game more often than i should ever be forced to and i'm not really concerned to play it in the browser if i want to.
Most of the games listed there are in fact abandonware so there is noone who actually suffers, except people who feel that people should abide laws no matter how useless and/or damaging they maybe.
What bothers me about the current generation of internet users is the self-righteous segment. At least those from the US should consider that EVERYONE commits crimes, even felonies, regularly without even being aware of it. The complexity of the legal system has reached that point. In fact, based on the estimates in the Reason article linked below, the average American commits 3 felonies a day. Doesn't is seem possible that maybe there's a difference between ethical and legal?
Broad unreasonable laws have a corrosive effect-- they reduce the average person's respect for the law. The culprit isn't "this generation of Internet users". It's the laws. And it's not hard to argue that IP protections that lock down important pieces of our shared culture decades after it could have any effect on the original authors ability or desire to create works for the public fall into that category of corrosive laws.
Its not hard to see why. Playing games (or listening to music, or watching movies) is legal. Their crime was using an illegal distribution channel.
I'm not sure what bothers me more about the current generation of Internet users: that many of them actually think a site like this is legal, or that many know it's illegal and don't care.