For more than two months i have been noticing one thing. We have been working on a site where we have been working on more than hundred pages of a website. We could not work on all of them altogether. So we picked up 30 pages every month and worked on them and next month for next 30 pages. All these new product pages rank fast on google.com.au. Few of them appeared later on google.com and many are still to come. The site is not related to au, not located in au. And product pages are related to US only.