Moms worry about everything. It's in our DNA. So when we heard about a social media site that serves to reduce a mother's stress, we got curious. hashtagmom.com uses automatic FourSquare (a site for older teens and up) check-ins to send a text to mom or dad letting them know their child has arrived safely at a destination. Sure, a real phone call would be nice but as an alternative to being totally out of the loop, an automated text isn't half bad.