| http://www.w3.org/ns/prov#value | - The method according to claim 1, further comprising the steps of:designating stored messages, including the anchored messages, as read or unread, wherein read messages have been presented to a user and unread messages have not been presented to a user; and prioritizing a deletion order of the stored messages depending upon whether each message is anchored and whether each message is read or unread
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