I take a quick look at the "sites that link to you" section of google's wmt and get hit in the face by 14 brand-new links.
I am small. Fourteen links from a single site is not going to slip under the radar. Numbers in this range generally mean a people-finder type site where they've got search results for every possible name from the e-books, plus possibly one or two Canadian politicians.
But in this case I know for a fact that the site in question doesn't link to me fourteen times, because I made that other site. It links to me once. (And I link to them twice. When you mention someone by name, it would be unnatural not to link.)
Closer inspection reveals
:: drumroll ::
thirteen links to piwik.php. (Aside for those who don't know: piwik uses a single database that lives on one of your sites. Other sites feed into the same database via a snippet of tracking code.)
Do you suppose the googlebot sees your GA tracking code and tries to crawl its own home base? Show of hands...