If you’d like to view the forum anonymously, there is a setting for this in User CP. In the upper left corner of the forum click on “User CP” and then click on “Edit Options”. Once there click the box that says “Use Invisible Mode”.
This is information from the
forum FAQ about what "invisible mode" does.
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Login & Privacy: set your
- 'Invisible Mode' - sets whether or not other members can see if you are online and what page you are viewing