Im back in my usual computer lab sitting in the corner being totally antisocial...

The computers I lined up in the 3s. When I come in I notice right off the bat that people are either sitting at the first or third computer. This way if someone else wants to go in that row and there is only on person there, they can chose the less awkward choice of sitting two seats away. What I do is sit in the second seat so people have no other choice but to sit next to someone.