Continuing the Facebook / business model theme, here is an interesting observation I saw on Social Media Today from Jim Worth. He says that Facebook today reminds him of AOL in the 1990s. AOL became the gateway people used to get onto the internet in much the same way as Facebook is the gateway people use to do social media. But once through the gate, people often move on. That, in a nutshell, is the problem Facebook faces. Failure has stalked all of those who try and hold onto the people they take through the gateway – from AOL to Yahoo. Why should Facebook be any different?