See also how to disguise an IP address.

You can disguise a domain name as a hex-ed domain name, so people dont know where they will end up when they click on it. The real use of this is probably none, but it can be used to fool friends when sending them links :)

For example, both these URLs go to the same place:
http://www.edlin.org
http://%77%77%77%2E%65%64%6C%69%6E%2E%6F%72%67

Use this javascript to calculate it automatically:

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