Stop: Go there now: http://www.google.com/ig
I really like how they've added the expandable tabs on the left of page. This helps them layout the information very elegantly on the main content area, while keeping the left side as the navigational area. I can hide or show the subcategories as I wish, and showing them let's me scan them very easily and painless.
For example, I have 3 groups:
Below each group is a list of sub categories. For example, under 'Home' there are all of my various Google services: Blog Reader, Gmail, Calendar, News, Maps, Weather, Notebook, and so on.
Under Quantum, the subcategories are nothing more than daily RSS feeds from various Scientific news sources.
Under Fun, I have local movie times, various bookmarks, TV program schedule, Word of the day, etc...
I could see me adding a lot more categories to this when I find some time. One idea is to add various groups like
- .NET Programming
- Application Design
- Trail Running
- Product Searches