I disagree with this conclusion. Also, I have a related issue with some of the opinions I hear e.g. on HN that confuse me.
Many a person says in defense of ads - "but surely authors have to support themselves, otherwise there'd be no site/software", "TANSTAAFL", etc. But this seems to me to be in disagreement with observable reality.
What I see is a strong and direct correlation between amount of ads and crappiness/dishonesty. For websites, it is usually "the more ads there are, the more likely content is wrong/crap/nonexisting and the author is there to take your money". For applications, similarly - more ads means crappier downloads, and - if it's the author's site that's full of banners - the program is most likely shit.
What I observe is that there are two reliable types of sources/downloads: 1) linked on author's site, free and free of ads - they signal that the author actually cares about the content they're providing (see "the toilet-paper companies"[0]) and 2) linked on author's site, that ask you to pay up front - here it signals that the author is honest.
So do the authors really have to "support themselves"? Or is it that the honest ones either do it for free (because they care, and they get money needed to support it elsewhere) or sell in clear terms? And the ad-dependent money makers have no business being on the Internet in the first place?
That's why I also feel no guilt for browsing with AdBlock on - neither the ads nor the ad-serving pages are a good deal for anyone in any way.
As for the Downloads.com, CNET, et al. - I hope that the introduction of Windows Store/package manager will shut them down for good. They're evil, they deserve to be down.