There are some new Capital One Offers out that may be of interest for some cardholders, including $100 back on AT&T TV, 5% back at Best Western, and 5% back at Hertz. The terms on all of these are pretty general, so it isn’t entirely clear what would or would not qualify. If you have a Capital One card, it may be worth taking a look as there are some other stores with rates beating other current portal offers (e.g. 10% back at Brooks Brothers) that may be of interest depending on your circumstances. Keep in mind that Capital One’s terms limit you to $1,000 in cash back from these offers every 3 billing cycles and they are slow slow slow to post. I tried both going Capital One Offers and using a non-Capital One card and going through and using a Capital One card and neither purchase has resulted in any cash back nearly a month later, so YMMV on posting times (there is no indication as to whether my purchases have tracked). In short, use Capital One offers at your own risk
Keep in mind that these offers exist only on some cardholder accounts and are a separate thing from Capital One shopping). See this post about Capital One Shopping and then this post about Capital One Offers.