If you’re looking to carve out a niche on the web, look towards teaching the beginners. The best part is you don’t have to be an expert, just share what you’ve learned. Write, tweet, blog or stick your shiny forehead in front of a camera and talk. No matter how basic you think it is, I guarantee there are hundreds of people searching for your advice.
I completely agree. Ignore that voice telling you, “Don’t write/podcast/screencast about that! Everyone knows that already!”