Mobile computing provides ubiquitous access to social networking services
allowing computer-mediated interaction among its members. This article proposes
a new and complementary interaction paradigm promoting face-to-face encounters
among community members, based on their physical proximity. Therefore, the
virtual space for interactions is extended towards the physical one. The
proposal was implemented through a mobile ubiquitous application, which was
evaluated to understand its usability, perceived usefulness and performance.
The preliminary results of such evaluations are highly encouraging.