The page looks a bit funky (someone didn’t check the fonts on the left hand side of the page before publishing! perhaps that will be fixed before you click the link) and you have to search by US state or by country to see whether there’s any participating properties, rather than giving you a single comprehensive list, but it’s worth checking out before booking your next stay.
Point Stretchers offer 40% off of standard redemption pricing, which in most cases is the way to go. Some participating hotels offer only a smattering of dates… like two weeks for the whole year.. and there’s no guarantee that they’ll have availability on those dates when you check! But saving 40% is worth the extra effort to look for such properties.