I think it'll be convenient for multiple users to work on one web2py installation, if there's a layer on top of the admin app, providing the following features:
1. The admin app allows user registration. 2. Each user can view/edit only apps that he/she creates. This is strictly at the (admin) app level. Everything is the same as before at the filesystem level. (This is particularly useful for teaching (I think): one web2py app, many students).

