X launches AI custom feeds, replaces Communities

X is rolling out AI-powered custom timelines, a feature that effectively replaces its previous Communities function. These new feeds will be curated by Grok, X's own AI chatbot. This strategic shift aims to enhance user experience by providing more personalized content streams. Additionally, X is introducing new advertising slots within these AI-driven feeds, signaling a move to monetize the platform's evolving content delivery mechanisms and potentially increase ad revenue through more targeted placements.