The following is from the BillionGraves Blog:
After months of work in response to hundreds of user requests, BillionGraves has added several new features designed to validate and enhance the headstone records found on BillionGraves.
Introducing BillionGraves “Supporting Records”
The Supporting Record feature now allows users to upload evidence-based documents that support the BillionGraves records that have been collected through our mobile Apps. This means that users are now able to upload headstones, birth/death, burial, marriage, cremation, and many other types of records WITHOUT NEEDING A SMART PHONE!
[NOTE] BillionGraves will continue to emphasize the use of our mobile application to upload VERIFIED HEADSTONE RECORDS with their accompanying GPS locations and will remain a FREE resource to all.
You can read the full announcement at http://blog.billiongraves.com/2014/02/supportingrecords/.