I was reading an article about Google in Fast Company and it had the following quote, "...According to Hitwise, Google controls 59.2% of the search market, up fomr 45% a year ago: MSN's share is down to 5.5% and Yahoo's is 28.8%."

This tells you a couple things. One, Google is running away with the search game. They had a tremendous leap. And, two, if you get in good at Google and Yahoo! with your search results, you have almost 90% of the search market covered. Don't fall for the emails that tell you that you need to pay them a bunch of money to put you in a thousand directories. It's not worth it.