I assume that people who are listed as "Unknown" are people that are under a certain age and protected by COPPA laws OR haven't allowed permissions to the game. This is a problem though since most features of the game depend on friends. If all friends are named the same with the same picture it makes it impossible to know which are which.

This could be solved by a random generated and icon being assigned to each person. It would help friends to identify their ranches and remember the kind of horses they have etc.