Reason #1: Prevent Abuses
A Terms and Conditions acts as a legally binding contract between you and your users.
This is the agreement that sets the rules and guidelines that users must agree to and follow in order to use and access your website or mobile app.In this agreement, you can include the necessary sections to inform users of the guidelines of using your website or mobile app, what happens if users are abusing your website or mobile app, and so on.
Examples of actions of abusive users can include spamming other users, posting defamatory content or attempting to infect the website or app with malware.
If your website or mobile app hosts content that is generated by users, you can include a clause in the Terms and Conditions to inform users that harmful language won't be tolerated, as well as spamming other users [removed]
All of these can result in having those users who are found abusing your website temporarily banned.
eBay informs users of the guidelines for using the website in [removed] User Agreement:
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