Do not fear, the original (and best) Aggregator sites are here to stay! Hat tip to reader Simon M. who gave me the tip of subscribing externally to the RSS feeds of the geeklist announcement threads. Have done so for now and will see how that goes for March. Thanks Simon!!!
SGOYT Top 10 Games Each Month (Previous 12 Months)
Leaders are calculated based on unique entries each month. A unique entry is a single game by a single user in a single month.

This list will update when the previous month's list "closes", usually about the 5th of the following month. Then the list goes from daily updates to semi-monthly. So January's list will appear here around February 5th, etc.