Yes I totaly agree, I need to add something to comply with this as I'm in the UK (my bad), even tho I think it's stupid and may never get enforced.
I can't afford the legal costs if it ever did and as a community/open source project I'm just informing the rest of the community who may or may not be aware of this, as I didn't find it mentioned before.
While not exactly spam, there in certainly the chance one user will harass another via the chat system. I presume setting urself as offline would make you unavailable for chat in some-way, but that's not exactly helpful in that situation.
Are chat logs private?
Can Admins view the logs?
Can chat be selectively disabled for users or groups?
What features exist for chat atm? (as of 0.3.2)