I don't put my picture on my posts, because I take terrible ones and the less exposure they get, the better. However, I agree with Nanaandpapa. These pictures don't give much out information. What does give out really sensitive information are those posts that tell what dates a person will be away from home and enough information about where they live that would enable a determined thief to find out exactly where that home is.
Looking at that picture of Jack and Ann in India, I wouldn't be able to identify them.