Eóin, I try to live an ad free life, to me %98 of ads on the planet are obnoxious and waste of resources in my personal view, And spam is a way of delivering those obnoxious ads. Because ads are everywhere does not make "ads everywhere" a justified issue. Ads are everywhere because many people figured out "bogus" ways to make money, like putting banners on highway, buildings, times square, and noone questioned their acts.-kartal
Things can definitely go too far, an example: here in Ireland a number of vehicles have appeared which drive around towns and cities aimlessly carrying banner ads. To me that is a step too far as the ads are having a tangible negative impact; they add to our already serious traffic problems. Also it's unsustainable- it works only because a small number of ignoramuses with hard enough necks decided go ahead, if more follow suit then governments and legislation will no doubt have to step in.
That is the sort of behaviour I dislike, people abusing a loophole that exists only because no one previously had the thoughtlessness or selfishness to take advantage of it before.
But there is another side, ads can be beneficial. For example the ads in Gmail don't bother me because I see it as a fantastic free service which probably wouldn't be sustainable otherwise. I definitely see OpenCandy on this side, I've seen it in mediacoder myself and thought that's a neat way for the developer to get something back. To me viewing the ad was the least I could do as a tiny tiny thank you and I did so without any grievances.