Know anyone (student perhaps?) who can help visitors to a primary school tech showcase sign up to Twitter and tweet for the first time using their smartphones? We need a friendly person to help visitors press the right buttons and start Tweeting. Showcase is 10 - 6pm at University of Cumbria, Bowerham Road, Lancaster, LA1 3JD. £50 for the day. Call Jan on 07922876463 or email firstname.lastname@example.org.