Ads mixed with news stories without clearly being marked as such
Looks like Yahoo is now trying to fool readers into clicking on ads by letting them think they are Yahoo stories. That's where I draw the line and stop using Yahoo. I understand the need for adverstising, but when it's mixed in with the stories to fool you into believing it's a story, then yahoo has crossed the line. The ad I'm talking about is the one about the new joint compound. See the video about clinical trials.
One example is the ad that takes you to the webpage "Powerful Joint Discovery Revealed by Dr. David Katz on CBS "The Doctors".