6. The method of claim 1 , further comprising: further analyzing the data to determine a time period of relevance of the topic of interest, wherein a second topic of interest has a different time period of relevance than the time period.
7. The method of claim 6 , further comprising: obtaining additional data from the application, the additional data relating to additional user activity at the application, wherein the additional user activity is of a type of the user activity; and revising, responsive to analyzing the additional data, the time period of relevance of the topic of interest.