WhosOn Stats Page Disabled on My Blog

The last couple of days I have noticed a disturbing trend on my WhosOn stats page.   A server out of Amsterdam has been linking to my stats page every hour and 15 minutes or so to get its web sites listed in the referrer stats.  This alone irks me.  The stats page is there so folks can view a sample of the reporting in WhosOnCFC and it is not necessarily there to increase your page rank.  The domains in question would make Attila the Hun blush with shame and as I am not in the business of promoting pornography it will not be tolerated.