I was just thinking of the differences between my early trips to Vegas in the mid 90s and today. One thing I recall from my early trips were big signs on top of groups of slot machines that would advertise something like "Up to 99% Payback", which I believe meant that at least one machine in that station was programmed with a 99% return. In more recent trips, I do not see this. My guess is that the casinos have dropped the payout percentage and these signs would no longer be a good selling point and/or research has shown that this type of advertising did not increase play at the machines with the signs. Has anyone else noticed this change? Does anyone know why you don't see this much anymore?