With Twitter's usage numbers ballooning and its recent announcement of brand pages, interactive marketers are paying attention. Recognizing its potential across the marketing mix, many have already jumped on board, set up accounts, and joined the conversational fray. But few see it as a strategic option in their tool kits today. Why? Because most marketers don't really understand Twitter — neither its tricky challenges nor its unique possibilities. In this report, we explain how interactive marketers can — and should — approach Twitter to make the most of it for their brands.