I have used this with students and it has been a success. I ask them to create a Facebook page for a science concept, or charachter from a story, or a particular math operation. It has a place for them to put comments, lists of friends, lists of those who would not be friends (would division be multiplications friend?) as well as sites this person/concept would visit, and what would be advertised on their page. One of my students had "Thermal Energy" visiting sites about hot-air balloon rides and winter heating supplies. And "Thermal Energy" had an add on his page for vacations in Jamaica. It gets them thinking, it makes connections. Enjoy.