By studying patterns of interactions on networks—often scrutinizing us only as anonymous bits of data—researchers are working to predict which friends we trust and which we pay attention to in each area of our lives. The data can be hard to interpret, says danah boyd, a Berkeley PhD who just signed on at Microsoft Research. (She changed her name to lower case). “You may e-mail your mother less frequently than a colleague, but it’s not that she’s trusted less.