From newest reader glicious, a pair of questions:
"What's the difference between flammable and inflammable?"
"Also, I have a sizable tax refund coming to me this year. Where should I invest it?"
1) Absolutely none. In fact, if you go to dictionary.com and look them up, each is used in the definition of the other. English, as a language, is a lot like sausage; it's perfectly good while you're using it, but delving too deeply into its inner workings isn't the wisest course of action.
2) I have a few suggestions here: Kodak or Fujifilm, because people will never stop taking pictures of themselves. Motorola or AT&T, because people will never stop yapping to each other. Or storage units, just because they're frickin' everywhere. Somebody's making money off them.