I get one referral about once a month. They haven't updated my site in months. And I also see www.mydomain .com and mydomain .com as separate domains. I don't expect any traffic from them so any referral is great!
very big changes, and quite a noticeable change in the algo as well.
From my investigations, kw density in page content seems to have picked up more relevance, keywords in title, and kw's in the url. These three variables, seemed to have gained weighting, to the point that some SERPs that i was looking at, were looking as if this was the only variables that the ALGO was addressing, i kid you not.