What not to say on facebook and other social networking sites.Do you overshare information on facebook? High Tech Texan Michael Garfield says some of your social network “followers” may be looking for ways to harm you. Here are five things you should never share on a social networking site: your birth date, children’s complete birth dates, addresses, mother’s maiden names, or any details of dates or times you may be away from your home. Crooks can use this kind of information to steal your identity, or in the case of knowing when you’re out of town, steal your stuff.