I wonder how this be could be applied to customer service, queues and waiting lines outside of loyalty card programs.
For any kind of interaction which may be repeated then it just makes you look like a stupid business owner or software developer who can't properly estimate how long something will take!
I am still ambivalent about that, though.
According to a 1989 Newsweek article: The waiting times posted by each attraction are generously overestimated, so that one comes away mysteriously grateful for having hung around 20 minutes for a 58-second twirl in the Alice in Wonderland teacups.
Source: http://dspace.mit.edu/bitstream/handle/1721.1/37703/21793670...