in the summary of Busby SEO World cup 2 i found “to gain the highest position they can achieve on Google (USA Google Data Center – http://72.14.207.99), why this parameter should use? and Which is the best Google DC for checking ranking in USA for keyphare Busby SEO Test? I think we can use google.com and in the last of the url add &gl=us , for alternative we can check via http://www.aol.com and you will see your site ranking in
Google US or we can use google.ca. but i think it still in dilemma
is there anyone can help me to explain that?
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