@brit Morin was 25 when she left Google to start @britandco. Now — 10 years, $50 million in funding and 1.2 billion pageviews later — Brit knows a thing or two about building an engaged following on social media. "The answer sounds simple, because it is," she says. "Provide value to them. Our time is more expensive than ever these days since there are a million things competing for our attention." Here are five ways that her favorite online communities provide her value for her time: 1) Knowledge: They teach me new skills 2) Curation: They save me time, and inspire me 3) Entertainment: They make me laugh 4) Relationships: They help me find others like me 5) Deals: They save me money