This presentation introduces the simple knowledge organization hub (skohub), a proof of concept web service that allows to do just that based on current web standards. Given a SKOS vocubulary, the service publishes it on the web, providing RDF serializations along with a human-readable HTML front end. For each topic described in the vocabulary, a Linked Data Notifications inbox is provided, making it possible to publish and receive notifications about resources related to that topic. Finally, WebSub enables subscriptions for push notifications about resources matching a topic.