Originally Posted by
nerd
The IP is useful in determining geographic location, I'm guessing?
So if Google caches the image, Google can now track who is opening emails, and they, not the advertiser, now have the location info? Smart.
Well, Google knew it always anyways. If you login/open emails via GMail, they already have your IP. This just means sender of an email won't get that info, which isn't necessarily a bad thing.