Authors:

I was in Shanghai recently, where Twitter is blocked, and yet there were ads and billboards across town with hashtags on them.

"Twitter CEO Hopes To Attract Users By Clearing The Clutter". "All Things Considered" with Melissa Block and Robert Siegel, nhpr.org. May 2, 2014.
I was in Shanghai recently, where Twitter is blocked, and yet there were ads and billboards across town with hashtags on them.