Yes, they most certainly will be collecting tracking data. Do you link to any Google fonts? Or to the JQuery libary they host? Presumably that also sends info to Google.

What info they collect and what they do with that data is not clear. Here's an excerpt from their Google Analytics privacy policy for example

"Google Analytics does not report the actual IP address information to Google Analytics customers. Additionally, using a method known as IP masking, website owners that use Google Analytics have the option to tell Google Analytics to only use a portion of the IP address, rather than the entire IP address, for geolocation."

http://www.google.co.uk/intl/en_uk/analytics/privacyoverview...

Notable by omission is what Google do with the anlaytics data themselves, they presumably capture (and save) the full IP address as well as all the tracking data they collect.

I've said this many times before: Google has a rapacious appetite to track and record online behaviour. That doesn't mean they are evil or bad, but it does mean that their policies on tracking, collecting and recording online data should not pass without discussion or scrutiny.

If you are running Google's code in your application and you don't even know what it does, you probably want to remove that code from your application. There's a reason that banks don't link in stuff like GA.

Interesting question, as an paranoid, I'd comment out all Google related snippets.

I would not call that paranoid. But I think developers who use software like Twitter's Bootstrap should be aware of feeding information to google while developing (on their test-servers, eg. local, whatever..)

Well thought! I'm going to comment them out now!