Bashbosh blog at http://www.bashbosh.com/edu-gov-backlinks/ , has explained about importance of backlink from gov and edu site. However, recent interview from Matt Cutts (Google) said that link from government site (.gov) and education site (.edu) was treated same such other site like .com, .net, .org, etc. Here is interview from Matt Cutt that said "It's not like a link from an .edu automatically carries more weight or a link from a .gov automatically carries more weight. But, the specific platforms might have issues, whether it's not being crawled or it might be nofollow. It would keep those particular links from flowing pagerank."
