Any one have any idea how the 100 Night Badge is earned? I've been with MR for about 5 years and have definitely stayed more than 100 nights. When I look at my MR lifetime status, I have over 300 nights accrued. Upon my last stay, I earned the 100 Night badge just last week. Anyone understand how these 100 nights are tallied? It's a complete mystery to me.
The badges began in August 2014. When they started, users had to "opt in" to start earning badges. Only paid nights count, so you must have just completed your 100th paid night from the time you opted in.