Reef v1.0, Mass Referrer Tool
Adminshop is selling a tool called "Reffy: The Referal Monster" to spam HTTP referrers. "Reffy is a Windows-based mass referrer spammer, which means that it will make a connection to a buttload of sites of your choosing with any referrer URL and User-Agent that you specify," they write, and then sell the software for $50. I know I could write a java application to do this in less than a day: unbelievable that they would try and sell it. JoatBlog and Gagetopia both are complaining.
So, I whipped up a C# project that basically accomplishes the same task as a proof of concept. It only took a couple hours, but is has the same basic functionality. Binaries are not releasable, for security purposes, but here is the source code.
Disclaimer: Do not use this tool for illegal, unethical, or spam purposes. It is written as a proof of concept of the utter stupidity of referer spammers. By downloading this tool, you agree to these terms.