We show stations in contact with each other as if they are passing messages or spreading a disease. open 
Choose a band with activity.
http://ft8.ward.asia.wiki.org/assets/pages/spark-decodes/social.html?domain=t5.local&
We listen for confirmed contacts and then includes them on a bubble and arrows diagram. Inward pointing arrows show a desirable station which we hear worked by many other stations. Outward pointing arrows means we’re hearing a “wolf” working one station after another.
Of course, many, much more complicated relationships show when rendering all contacts for longer periods.
These notable or illustrative graphs caught our attention. Titles are formed from the oldest decode of the bunch, not yet the most highly connected.
An earlier version of this display distinguished US and DX stations as well as spreading from a small list of important stations including my own. enlarge 
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