I've tried using Google Chrome and Internet Explorer, neither web browser will allow me to rate beers when I click on Rate. Thanks.
@Mike is making some updates. Try to force a refresh of the page. Windows: ctrl + F5 Mac/Apple: Apple + R or command + R Linux: F5
I made some updates earlier. It may be necessary to refresh your cache. Here is a guide: http://www.refreshyourcache.com/en/home/