Huh?
‘Two artists will swap a file back and forth in real-time, adding to and embellishing the work. Each artist gets fifteen minutes to complete a “volley” and then we post that to the site. A third participant, a writer, provides play-by-play commentary on the action, as it happens. The matches last for ten volleys and when it’s complete, everyone with an opinion sounds off in the Forums and we declare a winner.’
[Layer Tennis | Today’s Match | Twitter]