Also, in talking about what Twitter can do for you, I came across this blog post the other day about Twitter and vacations:
tripso.com | 6 ways to leverage social media for a better vacation. The beginning of the article was about a woman who twittered Virgin airways because her kids were stuck on the tarmac and she did not know what to do about it. She tweeted, and a couple of minutes later someone from Virgin called her back. Much better than the gate agents who often don't know shit.