A Collaboration project is an online workspace for members who are working together. The features of a project are designed to facilitate teamwork and include such items as a calendar, task lists, documents, discussions, announcements, and search.
To view a list of all projects that you are subscribed to, navigate to the Subscriptions page.
To unsubscribe from a project:
To unsubscribe from a project from the Overview
application view page of the project, click the 
Unsubscribe button in the toolbar.
To unsubscribe from a project from the Project
Explorer, select a community project in the Community Projects folder,
then in the details pane, click Unsubscribe.
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