Block Site

This extension allows you to block website access. There is a master password that can be set for temporary access of blocked websites. User can add or remove blocked hostnames form the options page. It is also possible to use this extension to redirect a hostname to a new one. For instance it is possible to redirect google.com's search results to bing.com

For the FAQs and general feature suggestions please use:
http://add0n.com/block-site.html

For technical bug reports use:
https://github.com/ray-lothian/Block-Site/issues