Check Yahoo | Google Page Rank top 1000 SERPs

FAQ: Why only 1000 SERP? Because the maximum search results of Google search engine and Yahoo search engine are 1000 SERP.
FAQ: How to search google page ranks from different country and many countries fast.
Why focus on Google and Yahoo? Because Google and Yahoo are the most popular search engines people use. If you have top ranking on Google and Yahoo then you may receive high traffics as results. That is why SERP is the most important issue of  Search Engine Optimization. It is also the major goal of SEO Search Engine Optimization.
Another way to explain it: New traffics can come from good SERPs, they can give you a lots new visitors.
But of course your site must have good contents so visitors will bookmark it and come back to visit again.
Bookmark : www.SeoSerp.com : Google top 1000 Page rank SERPs checker