MacKeeper, go away!

[Marc Anthony]

If you are receiving a boatload of repetitive ads, you may have an evercookie on your machine. In addition to being able to hide in the Flash folders, they may live in the HTML5 local storage folder. Locate the below folder and delete unwanted contents; this folder may have some legitimate purpose, but I've yet to see it, and I really don't like the way that so many of these databases don't properly show up in Safari's security panel's "Show databases" dropdown. I went ahead and locked the folder to prevent any more databases being stored.

/Users/(your user name)/Library/Safari/LocalStorage