Google has recently released a new Chrome extension that allows people to block websites from their web search results.Once you have installed it,the extension will also send information about blocked sites to Google.
Once you have blocked a website,you won't be able to see the results from that domain name again.However,the process can be revoked .Therefore if you made a mistake or you just want to revoke a blocked site you will have to undo blocks at the bottom of the search results.
Moreover,you can create a list of blocked websites and see it in the top right of the Chrome window .
The extension is available in English, French, German, Italian, Portuguese, Russian, Spanish and Turkish for now.