I stayed up until 8AM last night reading web pages. Then I slept until noon, and got up and resumed reading web pages all day today, against my better judgement, since I have other stuff I really need to get off my to-do list. Normally I would need caffeine to get by on just 4 hours of sleep, but today I haven't drunk a drop of the stuff, and I haven't really been tired. Getting really interested in something online seems to be enough of a stimulant for me. In fact, I've read that coming across a new and interesting piece of information stimulates the brain's pleasure pathways in the same way as things like gambling, sex, eating etc. So yeah ... there is something to this whole 'internet addiction' premise.