Update: dead now.
2018.11.27 Update: This glitch was first found on 2018.10.31, and was fixed within a few hours. But now it’s alive again! Act fast if you missed it last time! Check the price is 0.5 c/p not 0.2 in case it is fixed very fast.
We all know Hilton points are not very valuable, usually people value them at 0.4~0.5 cents/point. Also they can almost only be redeemed for hotel stays for decent redemption rate. You can use Hilton points to shop on Amazon.com, but the rate is only 0.2 c/p, so usually it is not worth it. However, suddenly, today you can use Hilton points on Amazon at 0.5 c/p! For example, 10,000 Hilton points is now $50 on Amazon.
Click this link to connect your Hilton account and Amazon account: 
After linking, you can use your Hilton points at checkout:
If you don’t know what to buy for now, you can go ahead and buy Amazon Gift Card to use in the future, or buy some Visa Gift Card (there’s a fee to buy Visa Gift Card).
This is a glitch and I am sure it will be fixed soon. The value is too good to be true, so my recommendation is: just all in!