In the land of search markets, Craigslist is gaining marketshare, while some of the bigger players are starting to lose their footing. Google is still the dominant force in search markets by a huge margin, with over 13 billion searches in one month. Yahoo is in second place, with a mere 3 billion searches, Microsoft checks in third with a little over a billion and AOL is bringing up the rear of the top 4, with a little over 700 million searches.