I own 10 different EDU domains, haven't touched them in 3-4 years. If I start building them up, does the .edu give it any more authority when it comes to getting a high PR on the site? I plan to develop them for personal use, once they hit high PR I want to rent out links.
Its true Google give preference to EDU and GOV back links, I will suggest you do not use EDU domain for personally. Try to sell this domain to any educational organization in big amount
.edu domains and backlinks are powerful. But if you are having an edu.xx (like edu.ms) don't expect much results.