"Viral hits" refers to online content, such as videos or songs, that become extremely popular and widely shared very quickly across social media platforms. Full definition
It became one of the biggest viral hits of 2013, winning more than a dozen ad awards and yielding what the airline calls «simply astounding» financial results. (canadianbusiness.com)
A recent viral hit that has people dumping buckets of ice water over their heads shows what it takes to reach across the globe. (entrepreneur.com)
How does one create a follow - up to an accidental viral hit? (waypoint.vice.com)