As long as there is the option out there, it would be received better by myself and several others who are annoyed by the ads, especially the one that loads a video and audio everytime that I go to it. That's why I never go to ESPN while at work any longer. I got sick of their video player blaring while at my desk whenever I would go to look at it.
If someone doesn't have to pay, cool, they still wouldn't have to, but would have to deal with the ads. If someone is willing to pony up a few bucks a month to not have to have those ads, the option would be there.
I know, some that will be angry will be that way because they want no ads and for it to be free, but it's unsustainable to run a site that way.