Yhis mod maintains a summary of player interactions with the map on a per-mapblock, per-player basis, and records totals to a file-based database in a subdir of the world.
Interactions include time spent standing/moving, and counts of actions such as nodes dug/placed, deaths/respawns, joins/leaves, hp hurt/healed, etc.
The purpose of this data collection is to allow a server admin to identify valuable areas of a world map, i.e. areas that players have the most effort invested in, e.g. for pruning databases, prioritizing backups, showcasing builds, etc.
Players with the szutil_usagesurvey priv can use the following commands:
/blockuse: Dump statistics about the current mapblock usage/blockstats: Manage live HUD about currnet mapblock usage