While there isn't really much a service provider can do to stop the mechanism of a CGI proxy (webmasters also use PHP to create proxy websites), they can block traffic to the proxy servers themselves whenever they are discovered.
When using a proxy website that acts as sort of a "browser within a browser," you are using an encrypted connection to the web, which "anonymizes" the computer user and prevents the IP address from being recorded.
Additionally, with the ever-growing specter of identity theft and phishing scams, the ability to use proxy sites to visit MySpace can only help users retain a sense of security and comfort in their wish to enjoy social networking.
You can use sites that would otherwise be blocked by your school or workplace when you log in with a proxy like eBuddy, but there are some things you should be aware of before you log in and start typing in valuable information.
The marriage was celebrated by proxy on the 30th of September 1673.