Getting weird ads on websites like google and youtube

Question

underneath youtube videos it'll have a green button that says " watch it" and sometimes two black buttons that say "download" and "watch" and google has these "eat this, never diet again' ads that come up no matter what I search.
what's the deal with this?
I torrented some music, but it was Miles Davis so why buy it when the money wouldn't even go to him

Answer 1

Well, it may; but if it doesn't last, you may need to look further into
removing Adware or other contributory items that can get put in
your Mac OS X from browsing. Some sites hide a bad file or two
inside a different packet, so those are suspect to contain tampered
files or odd applications that can ruin the Mac OS X.
And some cleanupmac mackeep and other unnecessary and
corruption causing offerings do not clean much except your
billfold; they also cause damage to the system. Bad ideas.
TheSafeMac pages have some fairly good ideas, & to get an idea
(at a superficial level) see the Etrecheck report tool that others have
tried, that generates a postable page to show what may be running
in your OS X that may not belong there. Once posted in a thread it
can be read by knowledgeable persons who can understand it.
•About Etrecheck: http://www.etresoft.com/etrecheck_story
link includes click to download page
Also if you have an issue or think you do, and start a new thread,
perhaps contributor Linc, who knows the command line well
can spot your inquiry, and will reply with a way to get the reports
and also test your computer, to see what is hiding, where. His
methods are lengthy, thorough if followed exactly, and tedious.
But the results are better than piecemeal dissection & angst.
The simplistic etrecheck report and adware/malware guides from
The Safe Mac can help even a novice try & remove badwares.
Good luck & happy computing!