A very popular online journal of varying (ok, dubious) quality.
Leonardo
Leonardo was founded in 1968 with the goal of becoming an international channel of communication between artists, with emphasis on the writings of artists who use science and developing technologies in their work. Today, Leonardo is the leading international journal for readers interested in the application of contemporary science and technology to the arts and music.
Explores discursive, visual, social, and other communicative features of weblogs. Essays analyze and critique situated cases and examples drawn from weblogs and weblog communities.