Hi.. Basically since the EDU list is an optional blocklist, we leave it up to you to decide whether you really need it or not.
Yes it could cut out a lot of sources but I would find it hard to blindly trust every source. We try to add any known ranges that are considered a threat to level 1.
EDU connections are monitored more closely than probably any other kind of network. Some universities may work with and have worked with anti p2p companies to allow them to track and gather information on users and students. Icarus, pallisades and others I'd have to go and look up..
In many cases there is also a very close relationship with universities and govt organisations and other corporations who may have access to these networks at any time, also there have been RIAA board members that are staff at various universities.
Internet2 consortium members include the MAFIAA members MPAA and RIAA..
Students themselves may feel the need to try and block some networks at their own university for their own protection.
There is a very large cloud over allowing these networks to connect with you, if you aren't concerned about this at all, then you should be fine by leaving the EDU blocklist out of your sources.
DDD tried to start an alternative bad edu lists here, but no one seemed to be interested in giving any feedback on it:
http://www.bluetack.co.uk/forums/index.php?showtopic=15867If you do some searching here and on google you might find more examples of why some people prefer to block them out altogether.
Here are a couple of old threads answered by Firstaid where people have asked the same question, I'm sure there are lot's more if you want to look :
http://www.bluetack.co.uk/forums/index.php?showtopic=10845http://www.bluetack.co.uk/forums/index.php?showtopic=11578