Come join me today at 11am PDT on Google+ for my worldbuilding hangout, during which we will be discussing Swearing. It should be fun (and likely funny too)!
Also, this evening at 9pmEDT/6pmPDT I'll be joining the Twitter chat hosted by Bryan Thomas Schmidt, #sffwrtcht . So stop by and talk more worldbuilding if you're interested!
Here's also a wonderful link I just discovered from NPR about a Dictionary of Americanisms - and not just those marketing phrases that invade the world, but local dialectal gems from our history. It looks like wonderful stuff!