تحليل مواقع المنافسين

trends

http://adwords.google.com/keywordplanner

http://www.spyfu.com

************
( 5/500 )*100 = 1%
3%, 4%, 5%
http://tools.seobook.com/general/keyword-density/
http://www.live-keyword-analysis.com/
************
http://www.spellcheck.net/