Turn an idea into an actual audience. Build a list of people — to a size you pick, the widest reach, or the highest-intent few — profile a market to see who's in it and how large it is, read who an audience reaches, or export it as a platform-ready file for Meta, Google, Reddit, or TikTok. Or start from a list you own — match it, expand it to every match, or read who's in it. Start here when you want the people, not just the lay of the land — "build me an audience of …", "the highest-intent people for X", "how many people are in my market", "match my customer list", "who's in this audience", "export this to Meta" — or type /watt:audience.