I just noticed something very cool on our Fan Page insights (the page details). Under the User section, you can view list of External Referring sites. I was curious about the where the new users were coming from. Although it's not a specific one-for-one list, you can view the top sites.
So I just want to thank Invest with Passion because this was gave the 2nd highest # of referrals. Very cool indeed.
Also, from a previous discussion about the difference between a fan page and profile page – I don't think profile pages have this insight section. Somone can correct me if I'm wrong. This is another benefit to using a fan page for your blog over setting up a new profile page.