Protecting your website domain from squatters

I had a rude awakening a little while back with my folks website, remericasomersetrealty.com. I stumbled onto a similar site, remericasomerset, without the realty on it. It was obviously someone who had nothing to do with Remerica, or Somerset Michigan personally. The site is basically full of paid links to surprisingly legitimate sites. Whether or not they know where their advertising dollars are going (I assume the motive for the owners of the site to promote them is money coming from some where) is a mystery, though I would think not for some of them.

Some of the site I saw at a glance on the page included:

homegain.gom
realtor.com
mollymaid.com
dice.com

Pretty surprising to me, and I wish I knew what more to do about it.
Here's the info on the site owner. West Indies! Surprise Surprise.

Registrant:
Keyword Marketing, Inc. (REMERICASOMERSET-COM-DOM)
P.O. Box 556
Main Street
Charlestown, West Indies
KN
+852.30164984
+852.30164984
message@keywordmarketinginc.com

Domain Name: REMERICASOMERSET.COM
Status: PROTECTED

Administrative Contact:
Keyword Marketing, Inc. message@keywordmarketinginc.com
P.O. Box 556
Main Street
Charlestown, West Indies
KN
+852.30164984
Fax- +852.30164984

Technical Contact, Zone Contact:
Keyword Marketing, Inc. message@keywordmarketinginc.com
P.O. Box 556
Main Street
Charlestown, West Indies
KN
+852.30164984
Fax- +852.30164984

Record last updated on 03-Jun-2008.
Record expires on 02-Jul-2008.
Record created on 02-Jul-2007.

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Name Server: DNS2.DNSSERVER6.COM
Name Server: DNS3.DNSSERVER6.COM