Yes, There are more if we drill down in the "promote" also more in the stories like threading, archive, buckets in profile ( don't the term for that). Now, I got the gist & wondering there will be thousands of products in Facebook
Let's say we are seeing total time spent is not increasing by a significant number but on the other side avg. no. of likes/comment/shares per user have been increased by a good margin. Can we say that our ranking algorithm is doing good??
I am going to list all products independent of platform, as all will be common.
How should we measure the success of ranking algorithm & how we can make sure that it is serving our purpose or user is seeing right thing?