Platform tradeoffs: Substack vs Beehiiv vs Audienceful

Ongoing migration and comparison between newsletter platforms. Substack (10% fee, new sponsorship program) vs Beehiiv (0% fee, $1M/mo ad network) vs Audienceful (flat fee, advanced features). Examples include Matt Brown/Extra Points and Queer Sports moving to Beehiiv. The choice impacts monetization control, data ownership, and revenue share. A new platform comparison article reinforces the tradeoffs.