Forum Moderators: open
IP: 124.64.52.nnn
UA: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; cat(http://catx.us/); dog(http://dogx.us/); fat(http://fatx.us/); games(http://ouou.us/); money(http://gougou.us/); music(http://uume.us/); news(http://aoyun.us/); seo(http://seox.us/); stock(http://stockx.us/); traffic(http://youku.us/))
Referer: [iurl.us...] site's home URL)
It hit with the same domain followed by /index.html which has never been an option - it's a dynamic ASP site.
iurl.us uses a US TLD registered by a Chinese company last April. From the home page of the site (viewed with a tool not a browser!) and from google, it claims to be a "tiny url" generator. The home page is written in English.
It hit only a few times across two sites; only one had an improbable page added to the domain.