Embedded searches are great. Whan I know to find it’s easy to use them. To discover new information or relations Graph is a better tool . I am using Embeded Search , you can see it there:
According to the case described in the mentioned scenario, it is hard to find which my coworker is the best - which get the biggest number of positive feedback.
Now I’ll get a messy graph with a mix of tags: questions 
, negative feedback 
, tasks 
, observations 
, CR from the meetings 
and finally positive feedback 
(because each note can have any of them inside a content)
When I’ll have an option to show only:
#F2F/(*.)/
I’ll be able to see clusters around some of them and I’ll be able to easily see and discover who is a winner.