What is a community?
We can start a public community with moderated access, controlling membership and managing access to the community's resources. Restricted communities can only be seen by community members.We can share files, bookmarks, and other resources. Post a question to the community forums.
Click I'm a Member to see a list of the communities that you belong to. Owners can access the Members page to add or remove members from the community. All members of the community can view the list of people who belong to the community.
Use tags to assign descriptive keywords to the community. Tags are useful for searching for a particular type of community or filtering search results.
Add applications to the community. For example, add a wiki or a blog.
Organize the community membership using subcommunities