Topcashback is my most used cash back website, their rates are usually the best and generally I find their support to be adequate (with the occasional hiccup). You’ve been able to redeem your cash back in the form of ACH transfer (no bonus), Paypal (no bonus) and Amazon credit (2.5% bonus) for some time. They’ve just added a new redemption option, you can now redeem your cash back for American Express gift cards and get a 3% bonus when you do so.
I was happily purchasing American Express gift cards through Topcashback when they were offering 2%+ cash back on large denomination gift cards and I’ll happily redeem my cash back in the form of an American Express gift card when I get a 3% bonus, but I’ll likely drain my account less often so I don’t need to deal with liquidating low value gift cards which I personally find a pain to deal with.
Hat tip to R.

