The contents of the "Location" field and the avatar are viewable to all members.
Gender isn't currently shown but possibly might be shown in the future. (You can set this to "unspecified" if you wish.)

All other details are only viewable by staff and are not shared with any other company or mailing lists etc.

Hope this helps :-)

---

"you are terrifying
and strange and beautiful
something not everyone knows how to love." - Warsan Shire