google ranking
 

I have one site. Already its 2-3 keywords ranking in top10. I make changes in meta tags that results affected in google quickly.
For some sites google take some time to show that changes in search results. Anyway thanks to Google. Actually I want to know how this happen? What are the things for which google gives importance and index fastly.

Google always use this formula while giving page rank to any website. So, its better to submit your links in high PR site to increase the page rank of your website.