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...
I despair at what's listed in some of my reports. Wacky invented non-existant junk URLs abound. Likewise corrupted and truncated URLs.
One of the 404 errors is for /$1 and which I now believe to be yet another fruitful visit to one of the JS files by Googlebot. However, I spent many hours suspecting that the htaccess had gone wrong in some way and was now redirecting Google to the literal example.com/$1 URL for some requests.
If Googlebot was a dog it would spend a large part of each day gnawing on its own legs thinking "yummmy bones" and then looking reproachfully at you when it fell over, upon trying to run around the yard..
You may be onto something... So the next big G* update will be called "Dalmation", keeping with the whole black and white scheme of things. It will result in a drop of exactly 101 positions in search results, for sites not being friendly enough for kids.
Note: Just tried to lighten the mood. delete if needed MOD.