The WebConfs website has a very useful list of “Best and Worst Practices for Designing a High Traffic Website.” Basically they collected all the major factors that might affect the search optimization of your site, attributing a score to them. The score ranges from -3, which is very bad for your site, to +3, which is very good. Below you will find a summary of the most important factors:
Sometime ago I wrote the article “Gather .edu and .gov backlinks” where I argued that, despite the lack of official documentation, most SEO experts agree that .edu and .gov backlinks do carry a higher value for search engines.
It is widely accepted that .edu and .gov backlinks carry a larger weight for search engine algorithms. Despite the fact that Google has never admitted it (sometimes it even neglected) most SEO and online marketing experts would confirm that .edu and .gov links outperform other extensions in terms of search ranking juice.
