We all have still confusion about back link important from .gov and .edu domains. i was also collection lots of back links from .in, .org, .info, .edu, .gov, and .co.uk. We know the importance of back links from these all domains. But now those days has gone.
i have read information about it on some forums, that if .in, .org, .info, .edu, .gov, and .co.uk domains are not linked to other domains and contains unusual more outbound links, main domain and linked domains will get loss for ranking. if any reputed domain from these all, .in, .org, .info, .edu, .gov, and .co.uk gives link back will be counted and will be effected in PR and also SERP.
So if we are planning to get back link from .org, .info, .edu or .gov domain, they should have good PR and also good quality link backs. Otherwise their back link can harm us.