In January 2021, prominent software engineer Tracy Chou opened up registrations for her company’s first product. The service—like the company, called Block Party—is designed to help people who experience harassment online, starting on Twitter but with the ambition to expand to other platforms. By giving users more control over what they see on Twitter, Chou is hoping to solve one of the biggest and most intractable problems with social media. The problem is also deeply personal. “I have some dedicated harassers who are proud to have been harassing me for six or seven years,” says Chou, who grew up in Silicon Valley as the child of Taiwanese immigrants. “Platforms are really bad at detecting this and don’t really care.” Chou’s experiences with online abuse began when she was in high school, she recalls, but slowly escalated when she became an early employee at Quora and then Pinterest. While at Pinterest, she published a blog post encouraging tech companies to reveal how many female engineers they employed, sparking a movement toward publishing diversity metrics. In 2016, she cofounded Project Include, solidifying her position as an outspoken advocate for equity and inclusion in the tech industry. But as her profile has risen—she now has more than 100,000 Twitter followers —the more she has been forced to deal with trolls, stalkers, and serial harassers sending her abusive, horrifying messages everywhere she goes online. “My whole life is oriented around how I can be safe, psychologically, mentally, and physically,” she says. Now, as Block Party’s founder and CEO, Chou is confronting a new challenge: a well-capitalized competitor offering a free alternative to Block Party. Just a few weeks after Chou opened Block Party to the public, another startup called Sentropy announced a similar product. Like Block Party, Sentropy Protect is designed to help Twitter users manage online harassment by filtering out abusive messages. While Chou ultimately plans to sell subscriptions to Block Party, Sentropy, whose core business is enterprise software, says it will always offer Protect to individual users for free. My whole life is oriented around how I can be safe, psychologically, mentally, and physically.” Tracy Chou, Block Party The financial disparity between the two companies is stark. Though both launched their consumer products in early 2021 and were founded around the same time in 2018, Sentropy has raised a total of $13 million in funding. Block Party has raised less than $1.5 million, from Precursor Ventures and a handful of angel investors including Project Include CEO Ellen Pao, former Facebook executive Alex Stamos, and former TechCrunch editor Alexia Bonatsos. When we spoke in early March, Chou was her company’s only full-time employee and she’d built most of the product on her own. Sentropy, meanwhile, has a team of 26. For some in Silicon Valley, news that Sentropy would be competing with Block Party touched a raw nerve Read More …