facebook-opengraph and click-through rates

Hi,
I got this warning :

Admins And App ID Missing: fb:admins and fb:app_id tags are missing. These tags are necessary for Facebook to render a News Feed story that generates a high click-through rate.

the debugger indicates that this issue could in some way be limiting our click-through rates.

Is that accurate? Could it be adversely affecting our click-through rates?

are there any potential privacy concerns for our users/admin as a result of said fix (adding the admin ID)?