Algorithm
PageRank | Panda | Penguin
A search engine algorithm assigns a numerical weight to various elements of a web page. The major search engines update their algorithm from time to time. Initially Back-Links and Keywords dominated the algorithm. More recently User Experience has began to play a much larger role and there has been a greater effort to penalize sites for webspam. The exact elements and their weight in the algorithm is a highly kept secret but some of the main factors are:
- User Experience
- Quality of Content
- Loadtime
- Bounce Rate
- Popularity
- Layout
- Backlinks
- Keywords
- Content Freshness
- Webspam
- Age of Domain - Matt Cutts, Google discusses on youTube
- Location of Server - Matt Cutts ,Google discusses on youTube