This document discusses the freemium business model for open source software vendors. It acknowledges criticisms of freemium but argues that it also has benefits. Freemium provides open source code while also allowing vendors to earn revenue through paid enterprise versions or support contracts. As long as community versions remain open and useful, freemium does not compete with traditional open source and helps open source expand into new domains. The author's view is that freemium overall does more good than harm by supporting open source development through commercial channels.