Duh
You have to assume that every casino type that wishes to can pour over this public site. Sometime back when I was talking about a Vegas trip on the board and talking about the difficulty in getting rooms during the period of time, I got a PM from someone saying, "I am a Caesar's employee and can maybe help you out if you have a Total Rewards card, simply give me your name and card no. and I can see what I can do about getting you accommodations for your Vegas trip, etc."
Needless to say, I did not take them up on this gracious offer. I think I still have that message saved! I should put the name out here so people can see who it was... one down, 356 to go though. COUNT on there being lots of casino people lurking about here. Hell, I heard a rumor that Bojack is actually Gary Loveman!(Just kidding)...
Watch what you say, watch your associations, be careful... just common sense stuff (unless your identity being revealed is not an issue, of course).