I hate Ads as much as next guy, but what will be the future of the internet without the Ads? where the revenue comes from? do we have to pay for every site that we use? I prefer a free content internet with reasonable amount of ads!!
One problem is that most sites seem to think of advertising as adding value for themselves and the advertiser. Advertising can and should actually add value for readers with a good example being the job listings here on HN.
I think some % of publishers will have to try and adopt better advertising practices (plus maybe offer some additional paid features), and those that do will be able to survive.