If you are searching for information on .edu links, you must have heard from somewhere that the search engines place a higher value on backlinks coming from schools, as it assumes impartiality, academic nature, useful resource, non-commercial nature, etc. Well, you are right, for the most part. .edu sites are harder to come by, since only fully accredited educational institutes can register, so you can’t easily fudge the links. If you represent such an institute, you’d register your domain at Net.EduCause.Edu as they are the sole registrar for .edu domains.