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.
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. 10. The computer-implemented method of claim 5 , further comprising: determining the popularity of a first information item based on a number of activities performed on the first information item, an authority of users who performed activities on the first information item, or a popularity of collections of information items to which the first information item belongs.