Note: The "activation" I am talking about here is not the same as the "activation" in this question.
I just got a Chase Freedom credit card, mostly for the 5% cash back rewards.
I had seen that every piece of promotional literature referred to "activating" my rewards, so I was expecting some difficult process. Instead I logged in to the website, clicked a single button, and my rewards were on.
Edit: As of Sept 19 2015, I now have to type in my last name, last 4 digits of my card, and my zip code...all of which are things that Chase already knows about me. Could be confirmation bias, but I have to wonder if the high ranking of this question on Google had anything to do with it.
Considering the ease of the process, why does Chase require cardholders to do it at all?