I just noticed "show ripples" as an option on the pulldown next to a G+ post. It maps out the interaction around a shared item. I'm not sure what it really tells me; this could be the latest in what I fear is a fad in data viz-es meant to inspire ooh's. Or it could show me new people talking about the same topic. What do you think? Let's see how many ripples we can cause with this post. Plunk. 

Here's the link to the full page: https://plus.google.com/u/1/ripple/details?url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DUd3mMj0AZZk&context=z12efrxxpwudz1azc04cf5n4jozahhqwdc0
Shared publicly