[header] How to unblock blocked sites [title] Find a good web-based proxy server. [step] Proxy servers act as medium, visiting a blocked site for your computer, then showing it to you. Additionally, your ip address and location are not tracked, so you effectively become anonymous online. 
[substeps] A good proxy service will not have too many ads or popups. Advertisements are very common and can be a big downside to using many free proxy servers.