I'm on the computer all day anyway in work - but since I'm just a research student I manage my own time - that is, I manage to be on Mudcat on my own time. Some days I'll be too busy to give it more than a cursory glance, but other days I'll be a bit over-zealous with the "refresh" button and will re-read every thread on the list. Besides, I can always claim it's useful to my work (ha!).