[Retrieved from the Xbox Forum Archive]
Currently, there is a problem with the privacy settings features (more specifically, the Recent Games & Profile Content features) that are causing undesired results. If you would like for your motto, bio, etc to be viewable by
the general public, You will have to enable Game History for "Everyone" as well. The profile content at this time, is being controlled by the "Game History" option.
To enable your profile fields to show to everyone, You must select "Game History" to be viewable by everyone as well.
If you would like it set to friends only, BOTH options need to be set to Friends Only. Likewise for Blocked as well.
This was originally reported in January 2011, but is still not resolved.