Yup, more and more sites about sites...

clearwebstats.com

IP: 68.71.146.174 (server.clearwebstats.com)

USER AGENT:
PHP/5.3.3
Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.23) Gecko/20110920 Firefox/3.6.23 ( .NET CLR 3.5.30729; .NET4.0C)

Looks like it uses your user agent, like a proxy, after it uses the PHP agent, tricky.