I think I'm so leaky already that for me the safest route is just never share meta data. But I totally think the idea has merit. I think I would just want to be able to click a box that makes me feel pretty certain that I'm stripping it all the time no matter what. But I think it's a pretty good idea and it gives you something you can build other things on like you could have a feature that showed you pictures taken from around your current location. (maybe this already exists.)