We're building an aggregator in a sector that's fairly grassroots. There's money flowing, but people are reluctant to pay or offer up a cut without proof of traction and that it will help them in their businesses (naturally). I know aggregator apps are a dime a dozen and many fail on account of having a unsustainable business model.
I'd be curious to hear from this community about aggregator apps that you've encountered that have had very unique business models. Yelp, as a super obvious example, aggregates local businesses and functions mostly as a ad company (sales-aggressive model - I read somewhere that over 1/3 of their staff are sales).
Thoughts? I have about a million ideas, but would love to hear of some unique examples you may have encountered.