VPNs encrypt traffic data. This makes your ISP inaccessible. Sometimes, ISPs block websites and online services. It's done to protect purposes. This issue is common in countries where rigorous censorship policies are enforced. This can be prevented by the use of a VPN. For instance, if you walk into http://what-is-a-vpn47801.blogerus.com/32953622/an-unbiased-view-of-what-is-a-vpn