net.art has two definitions:
net.art is a group of artists who worked in internet art from 1994. The members are usually referenced as Vuk Ćosić, Jodi.org, Alexei Shulgin, Olia Lialina, Heath Bunting. This group was united as a parody of avantgarde movements by writers such as Tilman Baumgärtel, Josephine Bosma, Hand Dieter Huber and Pit Schultz but their individual works have little in common.
net.art is also used as a synonym for net art or internet art and covers a much wider range of artistic practices. In this wider definition, net.art means art that uses the internet as its medium and that cannot be experienced in any other way. Often net.art has the internet as (part of) its subject matter but this is certainly not required. See Net art.
In the development of Internet Art, defined by art projects which are "materializations of social networks about communication, about the Internet" (Lev Manovich, "Internet, modernisation and net.art" ), net.art (with a dot and a small 'n...
