The library departmental policy guide is crucial. For example, the department is working on a project of procedure manual for the student workers on Wiki. The department forms a committee for the Wiki project. The committee has to set and follow the guidelines of the Wiki project. I believe the policies consist of two parts: library level policy and committee level policy. The library level policy covers general guidelines to get approvals to begin projects. The committee level policy covers micromanaged guidelines to create and maintain projects.
In terms of web 2.0 tools, Wiki and screencast are useful. I believe that Wiki is the best for collaborative projects. My friend, an electronic resource librarian, is working on a statistics project with Wiki. She mentioned that Wiki is the best tool to collaborate her project with the committee members in the different departments. My supervisor showed me an instructional VHS video that was made in the 1980s. It is well made and proves that visual instructional materials are very effective for beginners. Therefore, the screencasting and vocasting are easy to use and effective instructional tools. I am so inspired that I can create visual messages right from my desktop by screencasting.
The procedure manual wiki is
The procedure manual wiki is a great idea, especially for student workers. I've been working at my library for 3 1/2 years, and still I learn new rules all the time that I was completely unaware of before and that aren't written down anywhere. Collecting all of the written and unwritten rules for student workers (or even for staff) will make it much clearer to people what their responsibilities are in different situations. And a wiki is great for that since it collects the knowledge of everyone; because sometimes it's only the person who's worked there 30 years who even remembers some of the policies that are rarely needed.