8. “ On page-Factor “ Keyword Density 5-10% Keyword in Title Tag Keyword in Heading tags, H1, H2 and H3 Keyword in Links Keyword Image File Names Keyword URL Keyword in Alt tags
9. “ Off page-Factor ” Page Rank (PR) SERP s Blacklink Index
22. Search Engine Market Share ranked by Volume of Searches for the 4 weeks ending 01/09/2010 http://www.hitwise.com/us/datacenter/main/dashboard-10133.html World Search Engine
23. Search Engine Market Share ranked by Volume of Searches for the 4 weeks ending 01/09/2010 http://www.hitwise.com/us/datacenter/main/dashboard-10133.html Thai Search Engine