Sir tell me one thing how it can attain ranking for all search engine like google,yahoo and bing all. For all search engine different techniques used? Some times keywords results appears on google top 10 and at yahoo not appear at top why .
I have optimize ranking for keyword "universities events" for http://meetuniversities.com/
on google ranking top 6 and 7 they are my subdomains our root domain few days ago on top 5 now it has decline and at top-18 on second page is there any technique to make it fix mean once i achieve ranking at top 5 then it will not decline.