Me? Mad? Absolutely. But all the best people are.
There are 10 kinds of people in the world: those who know binary, those who don't, and those who weren't expecting a ternary joke.
I've got into the habit of answering questions I didn't originally know the answer to: I learn entire languages to just help others - and I do it because I want to, it's fun.
Predominantly you'll see me answering on the HTML, CSS/CSS3, and PHP tags, but from time to time I may attempt to answer other tags too: so don't be surprised if you see me answer a jQuery/JavaScript tagged question with pure css madness.