Comply with the MaxMind license's advertising/documentation clause (metrics website)
From the MaxMind GeoLite license:
2. All advertising materials and documentation mentioning features or use of
this database must display the following acknowledgement:
"This product includes GeoLite data created by MaxMind, available from
http://maxmind.com/"
The web site (at a minimum, metrics.tpo/users.html) appears to be self-documenting. This acknowledgement may also need to be strewn throughout the metrics-db and metrics-tasks documentation.