The first example of what we now call a “blog” dates back two decades, but it wasn’t really until the late ‘90s and early ‘00s that the platform took off among mainstream readers. Soon after came social media outlets Facebook (2004), Twitter (2006), Instagram (2010), and more.

Back in the early days of blogging stood two very different writers: Andrew Sullivan, a journalist who helped to shape the genre as a vehicle for social commentary and analysis, and Heather Armstrong (aka “Dooce”), one of the original “mommy bloggers,” known for her humorous takes on home and family. She used her popular blog as a platform for advertising and for consumer protest, made even more famous by a certain dispute with Maytag about a washing machine.

Sullivan pioneered a new form of journalism that drew in tens of thousands of subscribers. Armstrong helped launch a whole subculture of women bloggers, herself making millions and amassing 1.5 million Twitter followers. Both helped define the genre and exemplify its breadth and potential.

And both have called it quits within the past few months. In addition to these departures from the blogosphere come celebrities who have publicly renounced their online presence on platforms like Twitter, including comedian Louis C. K. and director Joss Whedon.

Stepping away from the very platforms that shaped them and popularized their careers, these celebrities raise questions about the future of blogging in particular and of social media in general. In announcing their departures, Whedon, Sullivan, and Armstrong all mention wanting to move away from the barrage of “haters” who leave their reckless disagreements and insults in comment ...

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