16. The method of claim 4 , the instructions configured to, upon receiving at least one data item associated with a topic of a topical data feed after presenting the topical data feed to a user, update the topical data feed presented to the user.
16. The method of claim 4 , the instructions configured to, upon receiving at least one data item associated with a topic of a topical data feed after presenting the topical data feed to a user, update the topical data feed presented to the user. 17. The method of claim 16 : a first data item of the topical data feed having a responsive relationship with a second data item of the topical data feed; and presenting the topical narrative comprising: presenting the first data item in the data feed with a responsive indicator associated with the second data item.