196 You Have a Book in You Paid memberships to Internet sites are relatively rare, because site viewers lose momentum when asked to input their billing information. ESPN has the best model, whereby the “insiders” pay for sports statistics and fea- tures they can’t get any other way. 吀栀e cost very small: about $4 per month. 吀栀at may not sound like much, but if you can generate several million subscribers, this starts looking like a lot of money. Membership has only a limited application to social networking: by de昀椀nition, social networking is free. You might see some paid advertisements here and there, but they do not dominate the sites at all. Remember that. Be delicate with your posts. Respect the fact that people are there to socialize, have fun, and make new friends. Learn by Doing 吀栀e people who created Facebook and Twitter worked hard to make them as simple as possible. Did they suc- ceed? Well, the social networking sites are pretty simple, but they’re not completely simple, which actually is part of their attraction. We’ll talk about how to navigate these sites as e昀케ciently as possible. But the best way to learn social networking is to just jump in and start using the sites. Explore the di昀昀erent options and 昀椀nd out how they work. See what you like and what you don’t like. Look at other people’s pro昀椀les and see which one’s stand out in