Welcome to your hamster cage!: Dave Winer explains. "They make a wide variety of colorful and fun cages for hamsters that are designed to keep the hamster, and their human owners, entertained for hours. When you get tired of one, you can buy another. It's looks great until you realize one day, that you can't get out! That's the whole point of a cage. "And that's what Facebook and all the rest are. "When they say you get to use their social network for free, look for the hidden price. It's there. They're listening and...