Twitter all over the place right now. Everyone has his twitter feed and idem do artists. Consequently, today's musicians have a myspace page, a facebook group/profile, a blog, a last.fm profile, a flickr photostream and a twitter feed. .. and probably an official web page.
Moby just released his 9th studio album ("wait for me") and let fans write reviews via twitter. Twitter users just post your review starting with @thelittleidiot and ending with #waitforme. Further, the most creative review wins an original 'Wait for Me' artork by Moby!