I think that last year, the company running Ad Block Plus, announced the development of its own "acceptable ad platform", with the purpose of letting publisher display these ads without being block, and ads being non invasive. But I didn't ear more about it since.

I now reckon, to my surprise, that ad blockers will slowly die out, not completely but to a great extent.

I regularly use the Daily Telegraph (UK news site) and six months ago it was a nightmare to use because of slow loading ads. It seems they have learnt their lesson and the ads are now far less slow loading and less intrusive. The same goes for the Daily Mail.

It's now got to the point that where if I use a browser to view them without an ad blocker, I hardly notice the difference. Before it was a ten second difference with the pages jumping up and down all over the place. If that continues throughout the industry, ad blockers are dead in the water.

nomis5 that is exactly what the IAB was trying to achieve with its L.E.A.N. [webmasterworld.com...]
I hope others learn, too, because intrusive ads are a scourge, imho.