Yahoo and MSN hate me

Google analytics is a great tool. It helps me track where my visitors are coming from. The vast majority of my traffic comes from search engines picking up my old posts. But not all search engines send me traffic. Really its just one, Google. So far in the month of December google drove in a whopping 94% of search engine traffic. I submit sitemaps to all three search engines and yet only google ranks me high enough to be noticed. Frustrating.