All of the MGM Mirage Properties have a mobile site with the exception of Circus Circus. Below are the listed links.
Monte Carlo http://www.mgm-gn.com/
Treasure Island http://mobile.treasureisland.com/
Mandalay Bay http://mobile.mandalaybay.com/
As long as we are talking Vegas... here is a a generic rating site. RateVegas for Mobiles
Mobile Portal: http://thesalzers.com
Past: BB8320, BB8100, BB8700, BB7105, BB7100, BB7230, 2 Treos, 2 Sidekicks