Tumblr, the online blogging site owned by Verizon since its July 2016 acquisition of Yahoo, will ban adult content beginning Dec. 17, 2018.

The site, founded in 2007, makes the move about three weeks after its app was removed from Apple’s App Store following some child sex abuse content appearing on Tumblr.

Even though the site works with groups including the National Center for Missing and Exploited Children to screen uploaded material, some content got on the site. After it was spotted, “we immediately removed this content,” Tumblr said in an update posted on its site. “Content safeguards are a challenging aspect of operating scaled platforms. We’re continuously assessing further steps we can take to improve and there is no higher priority for our team.”

More: Discovery of child pornography leads to Tumblr’s removal from Apple’s App Store

Tumblr “was the last place on the internet that wasn’t restrictive,” said another. “Very sad loss for the Internet.”

This is the second major development quashing adult content in several days. Starbucks on Thursday said that starting in 2019, it will have new filters in place to prevent customers using its in-store Wi-Fi from accessing explicit content.

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Yahoo acquired Tumblr for $1.1 billion in 2013, and the deal proved a bane for CEO Marissa Mayer as Yahoo took a pair of charges to write down nearly half of its worth.

But the site has remained active with 449.2 million blogs and, according to its statistics, had more than 32.4 million posts on Monday.

If you haven’t been to Tumblr recently – or ever – here’s a look at their best of 2018.