1. Noise-reducing headphones may be absurdly expensive, but actually work.
2. Paper towels can be a short-time substitute, but are no long term replacement, for Kleenex.
3. Reading blogs at 4 a.m. is pretty similar to reading them at a normal hour. Commenting, however, not so much.
4. A disturbing number of people leave AIM on all night.
5. Spam is delivered at all hours. Which makes sense, since it's probably coming from Europe, Australia or Nigeria.