» Wed Jun 06, 2012 12:52 pm
The description is just bugged. Quote: "The description for the Blessing of Talos reads "Time between shouts is reduced 0%." This is due to the game using the decimal form of 20%, which is 0.2. That 0.2 rounds down in the description to 0, making it appear as if the blessing has no effect, even though it does properly assign the bonus."
(http://elderscrolls.wikia.com/wiki/Shrine_of_Talos)