Why woud someone use "your" domain on a web page

[Useless]

Some links list do that -- they print your free site's full URL below the title and description. Of course, you have the option to not submit to those lists.

All you can do with those SPAM sites is report for what they are. http://www.google.com/contact/spamreport.html Google is pretty good about it. Give them as much info as possible in the "additional details" box.