Imagine someone stood outside your house and tweeted every time you left your house. They're not doing anything wrong, anyone can walk down the street and see if you leave your house.

Would you be happy knowing that all the criminals in your area now have easily accessible information on when you're home or not?

There's nothing stopping someone doing that. It's only someone gathering information that anyone else could and tweeting it. Just because you can do something, doesn't mean you should.