  This paper examines the community formed by the Twitter users that used a
city-level hashtag. In particular, we provide a network perspective of the city
of Athens, Greece, as demonstrated by the analysis and visualization of the
relevant Twitter hashtag data, in order to present both an overview and deeper
insights at the microblogging practices of this geographic local network.
Further analysis suggests that the Twitter community defined by the members of
the network shows strong signs of a real-life community.
