There was some CB discussion on this yesterday. I believe tye thought that it definately shouldn't last forever, but that 24 hours was acceptable, which I also think is reasonable. There is a problem of not setting a defined limit (just look what happend to "reasonable length" in terms of copyright in the US). This seems as good a thread as any to discuss that.
If anything, I'd be more worried about people putting CB comments on their home nodes. For instance, arden
has used to have a CB quote by me which isn't in context at all. In that case, I think the only problem is that the humor value is lost, and I severely doubt that it could be used to convict me anything (unless the government becomes incredibly tyrannical, in which case I'm screwed anyway). I don't mind the quote being there, but it does lack the context of the CB at the time.
send money to your kernel via the boot loader.. This and more wisdom available from Markov Hardburn.