FRANKNOTE

"As a public service, therefore, I’m offering a handy clip-’n’-save guide to the social networking services you’re most likely to hear about at this summer’s barbecues. (Warning: This is an extremely basic overview. If you’re already someone who, you know, tweets, this will all seem like old news. But it’s not intended for you.)

These services all have a few things in common. They’re all free. They’re all confusing at first. They all require time to understand and exploit. You can interact with them from your cellphone, which is part of why they’re so popular."