5. The computer-implemented method of claim 1 , wherein creating the feed comprises: combining multiple, similar results into one result; ordering multiple results by— a recency of an information item, a popularity of an information item, a popularity of a collection of information items, an authority of the particular user, or the interest data.
12. The computer-implemented method of claim 5 , further comprising: determining the popularity of a first collection of information items based on a number of activities performed on the information items in the first collection of information items.