If there are any lingering doubts concerning Web Shield see this http://www.avast.com/en-us/lp-security-information-fp?p
Scroll to the bottom and take a look at the graphs. Web Shield works. 
If there are any lingering doubts concerning Web Shield see this http://www.avast.com/en-us/lp-security-information-fp?p
Scroll to the bottom and take a look at the graphs. Web Shield works.