One person in the audience asked how well the app will perform in Colombia, given the country's poor infrastructure. That can be a challenge, Zuckerberg said, especially when companies in Silicon Valley don't consider how their software might perform in other countries.
"There needs to be a bigger focus on faster apps that need less data to use," he said.
Facebook's Innovation Lab, which lets companies simulate how their apps might perform on other networks, could help, he said.
It wouldn't be a Facebook Q&A with at least one question about products or features. One person wanted to know if Facebook will roll out an "I've read this" button to stop posts appearing in their feed multiple times.
That won't happen, Zuckerberg said, though there's already is drop down menu on posts where people can indicate "I don't want to see this." That makes fewer posts of that type appear.
Facebook's algorithm tends to highlight posts when there's new activity around them, Zuckerberg said. Otherwise, if someone has a lot of friends, there's too much content to scroll through.
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