“However, with over 5,000 members in the community, it’s become clear we’ve outgrown Slack as a platform.”
PostHog’s public Slack had over 5,000 members, and paid Slack runs $7.25 per user per month. Free Slack eats its own history, so years of answers vanished where Google can’t index them. The new forum keeps those answers and the search traffic on posthog.com. Community is the pitch. SEO is the payoff.