Nowadays, due to the wide use of mobile devices,
more and more web applications have been
expanded to mobile platforms, as have OSN services.
We believe that it is the right time to highlight
the importance of mobile social networks
(MSNs). In MSNs, mobile users can publish and
share information based on the social connections
among them. On one hand, most major
OSN platforms such as Facebook, Twitter, and
LinkedIn release mobile applications to allow
users to access their services through mobile
devices. On the other hand, more mobile-centric
functions have been integrated into OSNs, such
as location-based services and mobile communication.
Understanding the user behavior in
MSNs is very helpful for the design and implementation
of MSN systems, improving the system
efficiency in mobile environments or
supporting better mobile-centric functions. In
this section, we focus on studies of user behaviors
in MSNs.