Within the wide expanse of social networking, educators appear to be gravitating to more protected and exclusive spaces. While teachers often use such popular mainstream social networks as Facebook, they are more likely to seek out and return to less-established networks that offer the privacy, peer-to-peer connections, and resource sharing that meets their specific professional needs, according to a recent survey and interviews with educators. As Facebook and Twitter are often blocked in schools, educators--with their particular schedules and Internet habits--are moving toward social networks designed specifically for them, according to data from a survey conducted by MMS Education, a marketing company based in Newtown, Pennsylvania.