Same story with local citations. Direct traffic from a Yelp or YellowPages listing barely moves the needle, but skip them and the Map Pack drops you like a rock. LLMs are doing the same thing - they pull from Reddit threads, Angie's List reviews, chamber of commerce pages, the whole messy ecosystem. Had a client's "best plumber in [suburb]" Reddit comment from two years ago surface in an AI overview last month. Phone rang three days straight.
The grind is unglamorous. Find the five subs where your buyers actually ask questions - not the big ones, the hyper-local or trade-specific ones. Answer like a human. Disclose when it's relevant. Mods smell promotion a mile away, they don't ban helpful. My rule: if the comment falls apart without the business name, it's garbage.
Timeline's the killer. First month looks like nothing. Third month you're wondering why you bother. Sixth month the citations compound and the Map Pack sticks. It's not lead gen, it's distribution infrastructure. Costs real hours daily. Worth it if you play the long game, waste of time if you need leads Tuesday.