I just noticed a referral to my site from the above link and followed it through to see who it was. It turned out to be a website that I had linked to in my recent knowledge-letter. They actually publish a list of all referrals to their site in the last 24 hours. This sort of data is usually hidden away and not published but I quite like the idea of making it publically available. I've added it to the long list of 'todo' items for this website.
NB. Could not resist it - I now have a referers page for my site.
