1. A method for supporting collaborating among a plurality of users each user at a respective associated one of a plurality of computing appliances, the method further comprising: providing associatively mapped storage in a respective one of a plurality of data layers within a memory of respective user data provided responsive to input by a respective user for storage in a respective one of the data layers that is associatively mapped to the respective user, and is stored within a respective one of the plurality of data layers in the memory; wherein for each respective one of at least two of the plurality of computing appliances the respective user data is representative of a display presentation of annotations originated at a respective associated computing appliance; generating a local display presentation at each of said at least two of the plurality of computing appliances responsive to the user data stored in at least two of the data layers; providing communication of the user data between the at least two of the plurality of computing appliances for storage of the user data in corresponding respective ones of the data layers; and providing local display presentation at each of said at least two of the plurality of computing appliances.