38. The method according to claim 37 , further comprising: ranking the determined users using an information retrieval algorithm; and selecting the subset of the determined users from highly ranked users.
37. The method as claimed in claim 2 , further comprising: publishing an item when a user annotates an item with a set of keywords; in the aggregating step, aggregating the annotations for each item such that the keywords associated with the item are aggregated from all the annotations of the item; determining items whose keywords match the at least one publishing keyword; determining users that annotated the determined items; and ranking the published item highly in searches for a subset of the determined users until a predetermined condition is fulfilled.