This document provides a reviewer's guide for IBM Lotus Connections 2.5. It summarizes the eight main services included in Lotus Connections 2.5: Profiles, Communities, Bookmarks, Blogs, Activities, Files, Wikis, and Home Page. For each service, it describes the key features and functionality. It also explains how Lotus Connections can be integrated with other applications such as Lotus Notes, Lotus Sametime, IBM WebSphere Portal, Lotus Quickr, Microsoft SharePoint, Microsoft Office, and Outlook.