Anon.to

Anon.to is an anonymous URL redirector

The advantages of anonymizing your external links with Anon.to
You can use this extension to prevent their site from appearing in the server logs of referred pages as referrer. The operators of the referred pages cannot see where their visitors come from any more.

Using the referrer removal service is quite easy:

We auto produces an anonymous link to tainies-online.info which prevents the original site from appearing as a referrer in the logfiles of the referred page.