@CyanPrime not sure how that's fixed it as your route inside theme.less doesn't actually point to the vanilla template. For that file to point at vanilla, you'd be looking at ../../../nodebb-theme-vanilla, but if it works then, so be it.
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)