Interesting, although I wish they had found a less perjorative term for people who "zigzag across many, often distantly related subjects without much tying the subjects together" - and the difference between 'busybody' and 'dancer' seems to be that the 'busybodies' had nothing obvious connecting their searches, but the 'dancers' did which makes me wonder 'obvious to who?'
All that mentoned, I used to get 'lost' in the college library, following one journal article reference to yet another article - something Wikipedia makes available to everyone.
I hadn't realized that Wikipedia had an app (d'oh!), have been using a browser (either directly to that website or searches including "site:wikipedia.org").