"Submit data" is a Firefox OS feature that allows Mozilla to collect certain non-personal information such as application usage (active use time, counts of opens/closes/crashes and a list of uninstalled apps on Firefox OS devices) and search engine provider information (which search engine provided search results to the device). Firefox OS records this data on a daily basis and sends the data to Mozilla bi-weekly. This data helps us to improve search and performance, identify bugs, understand app usage and create better content offerings on Marketplace.
More specifically, app usage data collected through the "Submit data" feature will inform Firefox OS and Firefox Marketplace so that we may deliver:
Search engine provider information, collected through the "Submit data" feature, will inform Firefox OS so that we may deliver an improved search experience based upon usage trends, such as default search options sensitive to regions and geographies.