Melanie Rose and Arabella Lee have been collaborating on projects that explore the ways in which we communicate since 2003. Post Marks, an intensive drawing project, was a year-long dialogue between the two artists who posted sketches, illustrations and experiments to each other daily. For their latest collaboration txtme they launched a national campaign to gather as many texts as possible for an online archive www.textbank.org. CU brings together the results of these projects and invites us to reflect on the methods we use to stay in touch.