Diigo a nice solution for creative groups

Working inside an interactive creative department that routes a lot of copy and design changes internally through printed copies, it would be nice if these changes could be communicated directly on the web page being discussed. Diigo is a nice solution in that it offers a nice features groups with a privacy option. You don’t want annotations available to the public so creating a private group where you can invite members on your team only to view changes and modifications is really nice. Diigo would work for just about any other group that needs to collaborate on a web project as well.