lammert - 4:42 pm on Oct 19, 2011 (gmt 0)

I tested it last year when the first encrypted test were done by Google and at that moment referrers were sent to the website. Have to do some new tests to see if this is still the case. The referrer URL not being sent is mainly a browser issue which protects non-encrypted sites to receive information from encrypted sites. It is not something which happens at Google's side.