based on my wizzley statistics, I've got traffic from 52% google.com, 4% google uk, 4% facebook, 2% ask, 1% google ca, 1% websearch, and also traffic from others such as google ph, google au, google fr, google sg, google hk, google za, peoplepcsearch, aol, optimum, twitter, yahoo, google kr, google hu, google tr, google.my, mywebsearch, pchsearch, and a bunch of different websites that i never heard of before...
when you look at your general statistics and it says "others", you can go into statistics for each page and see where the traffic came from. you can also check google analytics for more info and sources of traffic...