I wrote an article for a website a friend of mine keeps. I'll warn you now: its preeeeettttyyy geeky. It had been sitting in a state of partial completion for years, but I've been in a lot of meetings lately, and so I finally got a chance to finish it :P
Its definitely in the "See how smart I am/educational" category, and not a commercially material type of thing, but, still, I think there are some nice tips there.
Embarassingly - in the course of writing the article - I discovered a long standing bug (*cough* - my bug) that I'd been blaming on the Boxely team. You can see the bug in action pretty easily in AIM Triton 1.0, AOL Explorer 1.2, AOL Safety and Security Center, and the AOL Suite Preview.
What's the bug you say?
And sadly, you have to get all the way to the bottom to see what it is. See? Even us Programmers can learn from Programmers :)