I'm going to have to answer this with a list within a list, because my crippling list addiction has permanently rewired my brain.
A) It's never to our advantage to intentionally run an ad that yanks you off the site and/or annoys you so much that you're afraid to come back. How could an ad campaign ever pay enough that it would be worth it to us to lose our audience? If you guys go away, this whole operation goes dark. So it is not our policy to ever intentionally run ads that take you off the site, or play sound, etc. unless you specifically tell them to. But ...
B) No large site hand-picks its ads. Everyone signs up to an ad network, and then the network goes out and sells space to the specific advertisers. So if a site ever seems surprised to have certain ads showing up on their content, that's why. This is why a feature article mocking Scientology wound up with ads for the church right at the bottom of the page. I assure you that we didn't plan that! We apologize to anyone who clicked on it and was immediately converted.
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Which actually happened in a similar incident with some of our magazine readers in the '80s.