Several related software tools (both free and paid versions) support anonymizing proxies. The Firefox extension called "switchproxy," for example, supports defining a pool of proxy servers in the Web browser and automatically switching between them at regular time intervals.
In general, these tools help you both find proxies and also simplify the process of configuring and using them.
The ability to hide an IP address increases your privacy on the Internet.
Other approaches to improving Internet privacy also exist and complement each other. Managing Web browser cookies, using encryption when sending personal information, running a firewall and other techniques all contribute toward a greater feeling of safety and security when going online.