my website's keywords are good position in yahoo, bing , ask, and baidu also but from last in 2 months when i search in google using the same keyword i dont find my website .....but google only give more visitor to my website because most of all peoples using google only....
Submit your website in Google webmaster tool, but google shows result only when your site is being updated.
Submit your website in Google Web master and also do forum posting and blog commenting because both are very effective way for get good traffic on your website...........
You need quality backlink to get rank on google. Quality means high pr do follow links. So you must need to complete good seo to appear your site on google 1st page.