For a few years, Mlife and Topguest had a partnership which gave Mlife members 500 Tier Points when they checked into a MGM properties. I was notified on September 1, that the program ended on August 31st. Here is the email:

As of August 31, 2013 Topguest members will no longer earn M life points for checking into an MGM Resort hotel. Any points earned through the use of Topguest through this date will be transferred into your M life account. For questions regarding your M life account please visit www.mlife.com/contact_us. For questions regarding your Topguest account, you can reach us by emailing help@topguest.com