Information and communication technologies (ICTs) are building a new habitat (infosphere) in which future generations will spend an increasing amount of time. So, how individuals construct, shape and maintain their personal identities online (PIOS) is a problem of growing and pressing importance. Today, PIOs can be created and developed, as an ongoing work-in-progress, to provide experiential enrichment, expand, improve or even help to repair relationships with others and with the world, or enable imaginative projections (the "being in someone else's shoes" experience), thus fostering tolerance. However, PIOs can also be mis-constructed, stolen, "abused", or lead to...