Generally, the first link in a page is a link with the site name (where the site name is hidden and the logo is displayed). Google thinks back is your site name...
That's the point of my post. The page <title> should be the anchor. But because Google thinks they know better, they do extensive algorithm parsing (and yes I understand the goal is to foil spammer) then come up with random crap. They test their crap against WordPress, and if all looks fine, then they call it a day.