Some Points To Discuss About .edu & .gov Backlinks.
.edu tdl for an authorized educational website and they can register a domain with .edu extension. As the sites don't use any spamming techniques and have limited outbound links and of-course no bad link neighborhood. If someone manages to get the links from these educational websites and leaves a positive impact on the search engine result.
Same, a .gov backlink is from a website with the government websites. They carry some authority and weight and naturally can be very strong backlinks to have. If you can pay for any kind of advertising on a .gov domain name, just go with it.
How to build .Gov Links:
> Write about a Government Agency or local Politician
> Get a Government Contract, not possible for everybody but can try.
> Do Comment or leave some good reviews on gov Blogs / forums.
> Help people on the Tourism Boards & Educational forums.
> Look for foreign government agencies
In the recent time, there are many changes in the search engine algorithms and this is a myth. Actually a backlink which has High PR and coming from good link neighborhood, always put a positive impact on the campaign.
Well, if you are building links then make sure that:
> All links are Do-follow, even not dofollow then it gives less impact.
> The domains must have high PR than your website.
> Real Institutions sites. .edu, .gov , .gov.uk, .edu.co, .edu.mx,
> Make sure that the links coming from real educational website.
> Ping all the links.