So foil the "news groomers" and sidebar sallies by spending time viewing eclectic content. I love trying to provoke Amazon's sidebars into fits of visual gibberish (by viewing a range of things I have no intention of buying and which contradict my previous buying habits). Sidebar adverts are like the strip cartoons one doesn't care for in a newspaper. Annoyingly there, but ultimately ignorable.
As for the news thing, I simply briefly visit sites I wouldn't touch with a barge pole and download a single article (which is consigned to a background tab for a few minutes and closed usually unread).
Not perfect, but works (FGVO"W"). I'll bet it could be scriptable too, if I cared enough.