Thinking about this with a beer.
Some sites will want to "trend" something completely different to other sites - Jamroom is versatile so there are many types of site. Here's an example for one imagined type of site:
In a skin template, call jrCharts to get the top 3 most downloaded podcasts of the month.
Then call jrCore_list to get the two blog posts in the "live" category which have been most recently updated.
Then jrCharts to get the most viewed video in the past 3 days.
Then jrCore_list to get one advert from your highest paying advertiser so far this week.
Then jrCore_list to get one advert from your highest earning profile this year.
Display them under the title "Trending" with labels foreach like "2nd most downloaded", "most read", "Message from sponsor", "Top earner" etc.
If you need those trends to be mixed rather than displayed separately (with nice descriptive labels), assign each list or chart result to a variable, then randomise them using smarty in the template. But until you know what will work for your site, you could experiment with ordering them by cutting and pasting the order of the jrCore_list and jrCore_chart calls in your template manually, then see what it does to your traffic and then adjust accordingly.
i.e. Try setting up some list and chart calls in a template and then manually change the order of the list calls each week after studying your google analytics. Once you know more or less what your site needs build a module to save some time each week in order to cut costs.
Note: That's not a recommendation for your site, just set of general beer trending thoughts.
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¯\_(ツ)_/¯ Education, learning resources, TEL, AR/VR/MR, CC licensed content, panoramas, interactive narrative, sectional modules (like jrDocs), lunch at Uni of Bristol. Get in touch if you share my current interests or can suggest better :)
updated by @ultrajam: 08/30/16 03:50:20PM