PageRank Algorithm is a sequence of instructions which different Search Engines use for the calculation of the search result i.e. SERP which comes after every search we made for a specific keyword.
No one knows exactly about that Algorithm but we know how it works and how it gives ranking for a site. For Google Search Engine as you know is the number one SE these days and it gives priority to different factor like Keyword Strength, Domain strength, Inbound link Score, user data, content quality score, manual boost etc.
Keyword Factors:
- Keyword in title tag
- Keyword in header tagsKeyword in document text
- Keyword in internal links pointing to the page
- Keyword in domain and/or URL
- Registration history
- Domain age
- Strength of links pointing to the domain
- Topical neighborhood of domain based on inlinks & outlinks
- Historical use & links pattern to domain
- Inbound Link Score
- Quality of domains sending links
- Quality of pages sending links
- Anchor text of links
- Link quantity/weight metric (Pagerank or a variation)
- Subject matter of linking pages/sites
- Historical CTR to page in SERPs
- Time users spend on page
- Search requests for URL/domain
- Historical visits/use of URL/domain by users GG can monitor (toolbar, wifi, analytics, etc.)
- Potentially given by hand for popular queries/pages
- Provided by Google raters (remember Henk?)
- Machine-algos for rating text quality/readability/etc
