Today's field trip is to the Free Rice site. This has been going around e-mails and forums for a while, but in case some of you out there haven't seen it, I wanted to mention it.

 You don't have to register for anything, and you won't get any spam. It's simply a vocabulary test, with grains of rice being donated to charities for every correct answer. The site earns the money to make the donations by banner ads that flash on every word page, so the more you get right, the more advertisers are happy, and the more rice is donated. Simple? It is. And it's deceptively addicting.