Another scary one: search for “Flash update”, “Java update”, etc. If you use Yahoo, Bing, etc. you'll have to screen past dozens of adware-or-worse links before finding the official sites – perfect for the next time a security exploit hits the news and viewers are told to upgrade ASAP.
People have reported this to various slackers for years but companies like Yahoo are loathe to turn down ad revenue and they still have millions of users.
Agreed, but it's still a lot of people in aggregate and I suspect it has a notably higher percentage of the inexperienced users who would be most vulnerable to this and probably aren't like to switch to Google / DDG any time soon.
People have reported this to various slackers for years but companies like Yahoo are loathe to turn down ad revenue and they still have millions of users.