Here are some google operators to find .edu links
site:.edu inurl:blog "post a comment" -"you must be logged in" -"comments closed"
Google Search Query for Building .gov Back Links from Blogs
site:.gov inurl:blog "post a comment" -"you must be logged in" -"comments closed"
You can further tweak this search query by adding keywords to the end of it. Here’s some examples:
site:.edu inurl:blog "post a comment" -"you must be logged in" -"comments closed" "keyword"
site:.gov inurl:blog "post a comment" -"you must be logged in" -"comments closed" "keyword"
site:.edu inurl:blog "post a comment" -"you must be logged in"
site:.gov inurl:blog "post a comment" -"you must be logged in" comment there and get back links.
site:.edu inurl:blog
site:.gov inurl:blog
or u can write,
site:.edu inurl:forum
site:.gov inurl:forum
site:.edu “blog”
site:.edu “Log in / create account”
site:.edu “MediaWiki”