Ads intruding on my browsers

Question

I'm being bombarded by ads. When surfing the Internet, I constantly find myself forwarded to commercial/spam sites that I had no intention of visiting.
I just discovered that when I view a web page, certain key words (e.g. "save," "computer," etc.) in an article are somehow transformed to all caps and perhaps bold and are blue, indicating a hyperlink. They also have little green icons in the upper right corner.
Have I picked up some kind of bug or virus, or do the spamsters now have the ability to pirate other people's websites, inserting their own links?
To put it another way, can you see the links I'm describing on the following article? There's one in the very last paragraph and a cluster of three in the first two paragraphs under the heading "Desperate times." I can see them in both Safari and Chrome. Thanks.
http://www.theguardian.com/us-news/2015/mar/07/california-drought-farmers-drilli ng-groundwater-environment?CMP=share_btn…

Answer 1

Click here and follow the instructions, or if there’s a type of adware not covered by them on the computer, these ones. If you're willing to use a tool to remove it(you don't need to, but may find it easier), you can instead run Adware Medic; this link is a direct download.
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