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a terms of service agreement is a legal agreement where you disclose your rules and guidelines that your users or visitors must agree to in order to use your website or app.
Some common rules and guidelines include the following:
Not stealing your content and violating copyright laws
Not spamming other users
Not using your site for illegal activities
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These agreements are commonly abbreviated as ToS and are also referred to as a Terms and Conditions, Terms of Use, Conditions of Use, or User Agreement. You may see it referred to as an End User Service Agreement (EUSA) but this isn’t as common as the others.