But... but... if it drops a little further... and stays there for a while, maybe I can pick some extra up for the cheap!

I wrote a post yesterday(link) referencing some articles from Chinese news sites, which should help to ease the FUD. Word in those articles is that exchanges won't be banned, but will be placed under increased supervision. Maybe some shady exchanges will get shut down, but I personally don't think the reputable ones have much to fear.