I think we should seriously consider making expats the canonical URL and expatriates the redirect. I've never heard anyone use the full term "expatriate" in informal speech in either the East or the West. People always, always say "expat," whether "expat contract," "I am an expat," or "Let's have dinner with those expats."
The full name is unwieldy, a waste of time to type, and people who have English as a second language may not even know how to spell it, even if they deal with "expats" from time to time.
By way of example, today this site was on the front page of Hacker News. The title there was "The new Expats.Stackexchange Public Beta has launched." It's good that there's a redirect, but it's not good that people refer to a domain which is not the official one--this dilutes the brand.
I'm curious to know what people think are the advantages of using "expatriates."