I signed up for Chase Insights. They send surveys every few weeks, I don't always do them. This one was about comparing the language in two different emails. For a "hotel" card, spend an extra 15K and get 1 free night up to Cat 4 and 3 free Cat 1 nights.
Survey reward is usually a drawing for giftcard of varying amounts (they give out a few per survey). The CSR one I did, I was then invited to an online discussion for a $50 GC, which they did pay out. There are a few GC options, I chose
Amazon because most were restaurant that I wouldn't use.