Regular-expression based URL blocking extension for Chrome
Allows blocking of any URL based on regular expression patterns, so you can prevent webpages, popups, scripts, images, stylesheets, etcetera not just by domain name but by partial pattern matches as well
Additionally provides a list of URLs encountered but not blocked and a quick button for adding each URL's domain to the block list so you don't have to type it up manually.
Automatically closes new tabs for blocked URLs