ghacks.net: “When you visit Google’s main website for the first time, or after clearing cookies, you get a “before you continue” popup. On YouTube, another Google property, you will get a “sign in to YouTube” popup instead. You need to click on “I agree” on Google’s site or “no thanks” on YouTube to get rid of these popups and start using the sites. Problem is: if you clear cookies regularly, you will get these prompts again. It can be quite annoying to deal with these popups each time, e.g. to inform YouTube for the hundredth time that you don’t want to sign-in to the site. You have a handful of options at your disposal to deal with this. One of the easier ones is to use a different search engine and site, without losing access to Google search results or YouTube videos…”