I remember it coming into popularity right around when I started highschool; 2010ish.

Smart phones, home computers, and laptops were slowly becoming more common, at least at my school at the time. It lead to this shift from texting constantly to being terminally online at home after school. I still remember having a difficult time keeping up with the most popular le meme at any given moment because they evolved so rapidly over the course of like a year or two.