Metadata:
Metadata is usually technical data that is associated with User Content. For example, Metadata can describe how, when and by whom a piece of User Content was collected and how that content is formatted.
Users can add or may have Metadata added to their User Content including a hashtag (e.g., to mark keywords when you post a photo), geotag (e.g., to mark your location to a photo), comments or other data. This makes your User Content more searchable by others and more interactive. If you geotag your photo or tag your photo using other's APIs then, your latitude and longitude will be stored with the photo and searchable (e.g., through a location or map feature) if your photo is made public by you in accordance with your privacy settings.
