A lot of you already know this, but I wanted to post a reminder in case some didn't. If you upload pictures to the web, it's a very good idea to make sure you strip the EXIF data and any other metadata which could be used to tell the GPS location of the picture. Also, even something as harmless-looking as a street sign in the background or a unique feature of a building or painting on the wall can be used to help identify where a picture was taken. Be careful. Hail Satan!