Every one who has done some reading in the area of SEO knows of the supposedly magical properties that .edu domains have with search engines such as Google. The theory being that Google weights .edu domains a little more heavily, since they are less likely to be commercial, and thus less prone to abuse.
Digg (not surprisingly) doesn’t care about the TLD extension of a domain, as I found out this morning when I tried to submit this humorous series of Lyndon Johnson Pictures that had already done quite well at Reddit:
I have seen this happen quite often lately when trying to submit things to Digg that are front paged at Reddit. There is a large and ever growing list of banned domains at Digg (for spamming the submission process or for being a constant source of duplicated content), but this is the first time I have ever seen a .edu get the banned treatment.
There is obviously opportunity here if you happen to find popular content at Reddit (that happens to fit your business or niche of course, unless you have a catch all site where anything would fit) that resides on a domain that is banned by Digg. Of course, beware of content theft, but that goes without saying. = )