QUOTE(jesseryjhon @ Jan 17 2014, 10:44 AM)
I really want to know why keyword ranking are differs from tools and manual checking. Which I have to believe? I know well manual checking result is good, but some time it also varies why???
I have the answer for your question as I faced similar situation once my SERP book tool was showing different results for ranking and manual was also different. So, it was because of the crawlers, the guy in SERP support told me sir it depends upon search engine and its crawlers. A site may rank at 10 th position in .com but it can be at 15th in .com.au.