Access to Blocked sites - ISP blocks several sites for unknown reasons and by using Proxy's we can browse them too..
Country/Region Restriction - Some sites have regional/country restrictions like some sites only provide some features to U.S citizens only...So we can get hold of this problem.. read more..
Every device connected to the public Internet is assigned a unique number known as an Internet Protocol (IP) address. IP addresses consist of four numbers separated by periods (also called a 'dotted-quad') and look something like 127.0.0.1.
An IP address can sometimes be used to show the user's general location. read more. . .