The word "shill" refers to a person who promotes or supports something, often dishonestly, in order to gain a personal advantage or deceive others. Full definition
We would like to thank Kenneth R. French and Robert Shiller for making this data available through their websites here and here, respectively. (euclidean.com)
To test this proposition, I looked at the correlation between the values of different metrics, including trailing PE, CAPE, the inverse of the dividend yield, earnings yield and the ratio of Shiller PE to the Bond PE) today and stock returns in the following year and the following five years: (aswathdamodaran.blogspot.ru)