Also like to add that there are over 200 other sites hosted on the same server or IP as poptshirts
Here are a few
xxwww.1tim412.net
xxwww.1tim412.net
xxwww.3rd-eye-technologies.com
xxwww.3rdeyetechnologies.biz
xxwww.3rdeyetechnologies.com
xxwww.abisnailo.com
xxwww.aciduniverse.com
xxwww.acmesolutions.net
xxwww.actiondownload.com
xxwww.affiliatedownlines.com
xxwww.affordable2ndthoughts.com
xxwww.affordablesecondthoughts.com
xxwww.alfortorranceschoolboard.com
xxxwww.allprosol.com
xxwww.allprosol.net
xxwww.amenabrown.com
xxxwww.americanrouletteor.com
xxwww.amerizip.com
xxwww.anderwear.net
xxwww.antixclan2.com
xxwww.asenseofsmile.com
xxwww.atrainseminars.com
xxwww.aviateq.com
xxwww.ballinzone.com
xxwww.barristeronline.com
xxwww.bikurcholim.net
xxwww.blake-williams.com
xxwww.blanc-bleu.org
xxwww.boembox.com
xxwww.botscan.com
xxwww.c8group.com
xxwww.c8group.net
xxwww.canagora.com
xxwww.cantbelieveitskosher.com
xxwww.castlewood-us.com
xxwww.centerstonesolutions.com
xxwww.centuryhelimedia.com
xxwww.charliecallas.com
Perhaps that can also help you trace them.