These are the other highly scouted links that webmasters fight for in the
search engines as well. Like .edu links these are links that are very rare
to get and links from sites with the .gov extension carry a lot of weight
because like the .edu sites, .gov links can not be purchased from your
every day domain name registrar and sites that contain the .gov
extension Google fancy because of the high page trust rank that is given
to it.
These types of sites root urls will usually have a lot of pages indexed
and more importantly links from trusted domains pointed to it as well. I
will usually group these types of sites with “non profit organizations”
and “charity” type of networks as well because these sites usually do not
sell a product (or is of a high commercial nature) and gives away lots of
content as well.
The only difference between them is the url extensions, most charity and
non profit organizations will usually contain a .org extension but not
always.
An example of that if your local “town” site, which could be a high trust
non for profit website but contains a .com extension. However, even
though it has a .com extension, it very well still can be a very
authoritative site with a lot of page trust instilled in it by Google

because of all of the quality one way links pointing to it.
In addition, another important factor that it will have is that the domain
name will be significantly aged.
Even though they don’t contain the rare .gov extension I will still group
these ‘non for profit’ types of sites within the same category because
they are very similar in the way that they operate.
Ok, so the first step we need to take is to find out how to collect links
from .gov sites within the same theme of our site and one of the easiest
ways that I find is by using a couple of cool tricks to find blogs to
comment on.
How to find .gov blogs to comment on
Add this following query into Google, or make use of the seo Firefox
plug-in. If you add this into query into Google then make sure to replace
“keyword” with whatever keyword you are targeting.
site:.gov *keyword* + blog
Just like we did previously to acquire .edu links, you will make a list of
blogs that you will start commenting. I would highly recommend adding
them to an excel sheet and sort them by their page rank and alexa
number.
Of course you will need to make sure that the blogs are “do follow”
because if they don’t then theoretically you won’t be getting no search
engine link juice which makes this practice useless for seo purposes, but still a usable one for generating website traffic.