When editing my user profile (name, date of birth, etc.), how can I tell which information can be seen by other users (publicly visible) and what is only used by the system (and how it's used)?
The easiest way is to open up your profile in an incognito browser session.
Things that are visible to everybody:
- how old your account is
- when you were last on the site
- how many times someone viewed your profile
- the "About me" section
Things visible to ♦ moderators (of the site where your profile belongs to) only:
- real name*
- how many days you visited the site (and your current consecutive visits streak)
- your IP address*
- all the names you used in the last 90 days
*mods have to click a link to see this information, the act of which is also logged.