How To Browse Forums Without Logging

Visit any forum or website to find something useful and they will ask you to register.
All websites and forums will block unregistered users, but they won’t block Google Bot. What we will do is to switch our User Agent to that of Google Bot and freely browse any website or forum without registering.


First grab the User Agent Switcher add-on for Firefox called ‘user agent’ here and install it.
download link
http://chrispederick.com/work/user-agent-switcher/
Now go to Tools > User Agent Switcher > Options and then again to Options.

 After Clicking on option you will see some thing like this

Click on New> New User agent and add
Description field type: 

crawl-66-249-66-1.googlebot.com

and in user agent field type:

Googlebot/2.1 (+http://www.googlebot.com/bot.html)

 As shown in below image

Select Google Bot as your User Script by going to Tools > User Agent Switcher.

 Now Enjoy and browse any website or forum without registering.