Jack Shafer discusses online advertising as sponsored content – something The Washington Post, Business Insider, Forbes, Slate and others have adopted:

If, as George Orwell once put it, “The public are swine; advertising is the rattling of a stick inside a swill-bucket,” then sponsored content is the meal so wretched that even pigs will reject unless sugar-frosted. The average sponsored-content page pits the advertiser against the publisher; the former attempts to make his copy and art look as much like conventional news or feature copy as powerfully as the latter pushes back as hard as he can to preserve “editorial integrity” without forfeiting the maximum fee. It’s common for both sides to come away from the transaction feeling soiled and swindled, but, hey, that’s the nature of most advertising.

He cites Benjamin Franklin’s “Apology for Printers” in support of the separation of news and ads:

Proximity ads place commercial messages next to editorial copy, but they’re boxed and printed in such a fashion (non-editorial typefaces, for example) to reduce the chance that readers will confuse ads with news. It’s equally important to advertising-supported journalism that the news not be confused with the ads that run nearby, a point Benjamin Franklin made in his advertising manifesto in his 1731 “Apology for Printers.” Franklin held — and most publishers continue to hold — that the controversy raised in news stories is 1) desirable, 2) should not be held against advertisers and 3) that the content of advertisement should not automatically be held against the newspaper publishing them.