2. The method of claim 1 , further comprising enabling sharing of at least one of said clusters with at least one other user or public list.
2. The method of claim 1 , further comprising enabling sharing of at least one of said clusters with at least one other user or public list. 3. The method of claim 2 , further comprising receiving at least one additional data item relating to at least one of said clusters from said user or said public list.