I stay away from it because chunks of the data is hosted on your local machine, and it could potentially contain very unsavory data. Sure it's encrypted but try to explain that to your local law enforcement.
And even if law enforcement could successfully convince a court that you're doing something illegal by hosting data which you cannot look into:
They couldn't first acquire the necessary search warrant because they couldn't prove that you are the one who is hosting the particular piece of illegal data: Freenet's routing algorithm is anonymized, both the people who retrieve data and the people who store it are anonymous. (Disclaimer: The security of the anonymization depends on how you've configured Freenet. In the less secure modes a well-funded attacker can de-anonymize you.)
So if law enforcement knows a certain file is evil then they cannot easily find out the IP addresses of the people who store it, and the people who store it don't know that they are doing so.
Hence it is censorship-resistant :)