Who's found a loyal audience?
Sort your authors by engaged time among returning visitors to see who’s work is resonating with regular readers. Perhaps the top reporter in this category could host a live chat or podcast to engage further with this base; maybe it’s time to give her a regular column.
Drilling down to an individual author page and filtering by tag could show that one of your reporters consistently drives traffic with coverage of Apple. Maybe this is an opportunity for him to carve out a new beat or plan a “deep dive” series.