If it's remote loading, as in, pulling content from our servers live, then
we *can* stop it, and such mirrors should be reported to us on IRC in #wikimedia-tech (on Freenode, as usual) or else reported to our mailing list at wikitech-l@lists.wikimedia.org.
Remote loading is not helpful for us; it creates a small amount of
additional, illegitimate load on our cache servers and it facilitates loading the site into frames and so forth...this is not necessarily illegal, but quite often, remote loading sites won't really care about the GFDL and it becomes so.
Legitimate mirrors and people who want to reuse our content are free, and
encouraged, to download a database dump and process it for their needs. There is also an OAI live repository service, which I think we charge for (and I don't know how many parties actually use it).
If the licence our content is released under is violated, then individual
contributors to that content have a right to sue for copyright infringement; Wikimedia doesn't actually *have* the copyright and so may not be able to do the actual litigation (but I'm not a lawyer, hate lawyers, and am not completely sure of that).
Rob Church
I emailed info@Thagodz.com (which they say is their contact address) and asked how they get the content. --Mets501