When it comes to user privacy, all three platforms (Twitter, Discord, and Quora) have their own policies and practices. However, here's an overview of how each platform approaches user privacy:

Twitter: Twitter has a mixed track record when it comes to user privacy. While the platform allows users to adjust their privacy settings, it has been criticized for collecting user data and for its handling of data breaches. In recent years, Twitter has taken steps to improve its privacy policies and practices, such as implementing two-factor authentication and adding more transparency around data sharing.

Discord: Discord is known for its emphasis on user privacy and security. The platform uses end-to-end encryption for direct messages, and it allows users to set up two-factor authentication and other security features. Discord's privacy policy also outlines how the platform collects and uses user data, and it offers users the ability to delete their data or request a copy of it.

Quora: Quora's privacy policy outlines how the platform collects and uses user data, and it offers users the ability to adjust their privacy settings. However, Quora has faced criticism in the past for its handling of user data and for collecting data on non-users who visit the site.

Overall, Discord appears to be the platform that places the most emphasis on user privacy and security, while Twitter and Quora have both faced criticism in the past for their handling of user data. However, it's important to keep in mind that privacy policies and practices can change over time, so it's always a good idea to regularly review the policies of any platform you use to make sure you're comfortable with their approach to user privacy.
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