After you’ve build your website and purchased unique  and aged domain, you want to be found by the potential customers. Since the web space contains billions of websites, there is a constant struggle between websites over the first places in search engine results for competitive keywords.Getting to the highest places in search results of Google or Yahoo is a very long and tricky process involving loads of work on your website and outside it. In this article I’ll list some information about how Search Engines determine relevancy, a short preview on search engine optimization.

First of all, let’s review two most important algorithms Google uses to determine page relevancy – Page Rank and Hilltop.

The basic concept of Page rank is : the more incoming links your page has, the more important it is. Page ranking is given per page and not per website so don’t be surprised if your website shows different ranking on different pages. Page Rank is calculated as follows:

PR(A) = log10((1-d) + d (PR(T1)/C(T1) + … + PR(Tn)/C(Tn))) when :
0http://infolab.stanford.edu/~backrub/google.html