I think anonymity (or at least some privacy) is really needed.
The simple cause is: The University just blocked my account, because I was sharing with Gnutella (A company complained, and they complied) (I live in Germany).
I was for anonymity before, but now even more.
The University-Account isn't the only one I can use, so I suffered almost no damage, but is is the most comfortable.
We don't need the level of anonymity Freenet has. Just weak encryption, which can't be cracked on the fly, and some anonymity, which doesn't allow the downloader to see from whom he/she/it is downloading and prevents the uploader from seeing to whome he/she/it uploads. Some ideas on that here:
http://dlaikar.de/pwp/wiki/run.php?i...&iPage=AnoGnut
(Please feel free to add your own).