"This is a cool display technology." -John Carmack

"Here's a great link to send to skeptics about global climate change." -Al Gore

"This article is pseudo-science at best, and lies at worst." -Bill Nye

"I'm sorry, Pluto." -Neil deGrasse Tyson

Without attribution, none of those comments are remotely interesting. (They're all made up, but you get the idea.)

When I Search for things now, I see top results from previous co-workers, who have Shared things. Those results LEAP out at me.