Leaderboards give users points based on their imagery synced to Map the Paths.
Leaderboards have three types
Photos uploaded (by user): counts number of photos uploaded by user
Viewpoints received (by user): counts number of viewpoints users photos have received
Distance mapped (by users): counts the sum of kilometres covered by users Sequences
Leaderboards have filters
By transport type (parent/child)
By camera make (make/model)
Leaderboards can be
Global: considers all photos and has filters any user can modify
Challenges: are fixed and related to settings defined when challenge was created (no filters for user)
A challenge encourages user to capture photos in a defined location, and/or using a defined transport type, and/or using a defined camera over a defined time period.
Any user can create a for hire listing to promote their paid street-level mapping services.
Hire listings are owned by user, but have no relationship to any other objects.