Day 10 introduces another filter - check the top 10 results for your keywords, to see if there are web 2.0 sites in the top 10. Best to avoid keywords where there are already web 2.0 in the top 10, and stick to keywords without web 2.0 sites in the top 10. Why? so that you can use the advantages of web 2.0 without any serious web 2.0 competition.

Then it shows how to research your niche markets - use Google News, Google Blog Search, Google Groups, etc. Subscribe to the feeds in Bloglines. Use Google Notebook to take notes.