I dont know if this Method was poted here or not so i'll posted anyawy this is a method to get good .edu bolgs that are open for commenting and not having to be registered simply go to google and search for Code: site:.edu inurl:blog "post a comment" -"comments closed" -"you must be logged in" "keyword" replace the keyword with yours and leave the (") marks. i use it all the time to get good pr 3,4,5,6 and sometimes even pr 7 backlinks. just make sure : *that its ********. *post high quality comments. *post diffrent comment on each blog so you wont get spam blocked. enjoy.