The hashtag spread like wildfire and it now looks like it had a significant positive impact on Uber's key competitor, Lyft.
"The growth rate in Revenue per Active Rider increased significantly in the first and second quarters of 2017 as our brand and values continued to resonate with riders and they increased their usage of Lyft instead of competing offerings," the S-1 says.
In its S-1, Lyft heavily promotes values like "social responsibility," in a seeming attempt to differentiate itself from its bigger and better-funded rival Uber, which has come under fire for what is percieved as its cutthroat approach to competition.
"To advance our mission, we aim to build the defining brand of our generation and to promote a company culture based on our unique values and commitment to social responsibility. We believe that our brand represents freedom at your fingertips: freedom from the stresses of car ownership and freedom to do and see more," it says.
"In addition, our core values focus on authenticity, empathy and support for others and encourage our team members to take initiative. These values have given rise to a unique company culture that fosters an amazing community of drivers, riders and employees, and has helped establish Lyft as a widely-trusted and recognized brand. We believe many users are loyal to Lyft because of our values, brand and commitment to social responsibility."
It also says that the "Y" in Lyft stands for "why" as in, the reason the company exists, which is its mission to "improve people's lives with the best transportation."
More broadly, Lyft's overall market share in the United States has also grown significantly nearly doubling over the last two years.
"As ridesharing becomes more mainstream, we believe that users are increasingly choosing a ridesharing platform based on brand affinity and value alignment. Our U.S. ridesharing market share was 39% in December 2018, up from 22% in December 2016," it says.
In the fourth quarter of 2018, Lyft had 18.6 million active users and 1.1 million drivers.