Here is a whois on arcadeshopper.com incase you need any of this info:
Registrant:
Unicom (ARCADESHOPPER-DOM)
   16200 S.W. Pacific Highway Suite H
   Tigard, OR 97224
   US
   Domain Name: ARCADESHOPPER.COM
   Administrative Contact:
      McGill, Gregory  (GM575)      acker_42@YAHOO.COM
      The Keep Information Services
      16200 SW Pacific Highway Suite H PMB 144
      Tigard, OR  97224
      US
      (503)803-2533 (503)443-6185
   Technical Contact:
      Internet Division  (CS336-ORG)      webmaster@UCI.NET
      Unicom
      610 SW Alder Suite 1020
      Portland, OR 97205
      US
      800-350-2125
      Fax- 503-228-8917
   Record expires on 08-May-2005.
   Record created on 08-May-2000.
   Database last updated on 20-Aug-2002 17:04:01 EDT.
Perhaps it would be a good time to contact law enforcement?