The chances that someone will see a potential benefit in being exposed to information on a topic of interest for zero-investment cost is fairly high. Stick to

The chances that someone will see a potential benefit in being exposed to information on a topic of interest for zero-investment cost is fairly high. Stick to niche subjects and you'll get a niche audience. Everybody eats, most people cook to some capacity. Start a twitter account about "The Archaeological Assessments of Classic Models of Sociopolitical Types in Oceania" and I guarantee it'll feel like a close-knit community for nigh onto infinity.