First off, working in public is scary and distracting, as you never know who you're going to run into. Second, you can't look at all those cool and funny websites everyone's talking about, like What Would Tyler Durden Do. And third, the staff starts looking at you funny after your fifth straight hour of loading up nothing but video game websites.
On the plus side, I played a lot of Fallout 3 over the weekend, and I'm looking forward to sinking much more time into it across the coming weeks. I'm glad I waited until I had oodles of free time, as I don't think I'd be able to handle playing in bite-size sessions.