Try searching for "edu text links" on Google and you’ll see ads from companies that promise to place links to your website on .edu web domains that are generally owned by US universities. The same is true for .gov domains as that are the official websites of US government. A popular belief among the SEO community is that links from .edu or US gov domains carry lot of weight in the eyes of search engines and hence, if any of these ‘trusted’ sites link to your own   read more »