SPWeb Property Bag
The following url explains about SPWeb Property bag and how to add properties to the SPWeb Properties. http://trentacular.com/2009/06/sharepoint-the-wicked-spwebproperties-propertybag/ Hierarchical Object Store (SPPersistedObject) Provides the methods for an object to automatically serialize its state, persist that state in a permanent store, retrieve it at a later time, and deserialize it back into an in-memory object. http://www.chaholl.com/archive/2011/01/30/the-skinny-on-sppersistedobject-and-the-hierarchical-object-store-in.aspx http://www.chaholl.com/archive/2010/12/13/persisting-a-stream-to-the-sharepoint-configuration-database.aspx