VPNs encrypt traffic data. It is therefore inaccessible to your ISP. Sometimes, ISPs block websites and online services. They do this for security reasons. This is a problem that's prevalent in countries where strict censorship rules are enforced. This can be prevented by using a VPN. For instance, if http://what-is-a-vpn92356.blogrelation.com/15046504/5-easy-facts-about-vpn-described