“Oh,” people rush to object, “the Google search page is so spare, clean, elegant, not crowded with other stuff.”
True, but that’s because you can only do one thing from their home page: search. Anybody can make a simple-looking interface if the system only does one thing. If you want to do one of the many other things Google is able to do, oops, first you have to figure out how to find it, then you have to figure out which of the many offerings to use, then you have to figure out how to use it. And because all those other things are not on the home page but, instead, are hidden away in various mysterious places, extra clicks and operations are required for even simple tasks — if you can remember how to get to them.
Why are Yahoo! and MSN such complex-looking places? Because their systems are easier to use. Not because they are complex, but because they simplify the life of their users by letting them see their choices on the home page: news, alternative searches, other items of interest. Yahoo! even has an excellent personalization page, so you can choose what you wish to see on that first page.