@parkr `example.com` is made for examples, `test.com` is owned by Test.com, Inc.

> Patent 6,513,042 was issued to Test.com, Inc.   This patent protects Test.com’s intellectual property in the area of authoring, distributing and selling tests on the Internet.

Do you really want to hear from their legal department? I would recommend to use `example.com` (.org, .net) for *every* example or test domain name.