Hello, We get authority if we take blogroll link from .gov & .edu sites ? or comment effect search engine ? which is better ?
Blogroll is a way to get reciprocated to blogger's link you are linking to the blog that you are targetting in the blogroll.
it is difficult to find them....most people prefer to buy from users that have got the list so you may also search for somebody....as these are of very good for websites to emerge...
.gov and .edu are most valuable, if you get links from both of these its like a trustable and natural link. Google trust more .gov and .edu and gives priority to it. But some what now a days its kind a tough to find links from these extensions. Thank You
Well, every backlink carry equal weight (It does not matter what domain extension a link is coming from... And, Google has confirmed this) All what matters is, the quality of webpage from which link is coming to your website. Sometimes, backlink from a .com domain is much valuable that a .edu link.
I think both are same as important, but the one is more important which is most related to your site, for example if you have a site on business and you've got a link from .gov site which is also of the same kind then it is most important....
blog roll is good but in most of the cases its not possible to get the blog roll link right? so you have to do comment to get the link. its better because these are authority links. and Google likes them.