The Project Freewheel collaboration capability lets you collaborate in real time. But it does not have to be that way. A sharing session persists on the web much like a web site. Since the session contains your design data plus the contributions (i.e. mark ups) of others, it's more like a Wiki.
Let's try this out. I loaded the Manufacturing Sheet Set that ships with AutoCAD into AutoCAD 2008. I updated various sheets to include terms and images related to Autodesk Labs. Can you join my collaboration session and find them?
Register or login to Autodesk Labs. That way the session will know who you are. Use the Page selector on the left to select various pages of the DWF file. You will also need to pan and zoom around. Project Freewheel provides this capability for you using just your browser. When you find an item, you can use the Callout tool available in a Project Freewheel sharing session. This too requires only your browser. Markup the item you have found. You will get credit as the person who found the item, since the session knows you by your Autodesk Labs login. Let's see how long it takes to find them all. My daughter has started us off with Sheet 1. It's Alive in the Lab readers can handle Sheets 2 through 15. Her callouts are in blue. Yours should automatically be in a different color.
Collaborating with design data using just a browser is alive in the lab.