One of the great semi-secret features in Basecamp is the ability to add multiple instances of a specific tool to a project page. We've elevated this feature in Basecamp 5 (launching soon). For example, here's our "Mobile: BC5" project in Basecamp. This is where the mobile team is working on the Basecamp 5 apps (iOS, Android, and Desktop apps). In this project they have a variety of tools (a message board for announcements and focused discussion, a chat room for this that and the other, a…