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Just noticed on Barclays' website the Barclays Upromise Mastercard is back.
https://cards.barclaycardus.com/banking/cards/upromise-world-mastercard/
Without the 5% bonus on Upromise portal purchases, IMO the new version is pretty weak. I was big on the older version of the card a few years ago and got some significant cash back. Eventually closed it as Upromise takes forever to track rewards, but the potential payouts were nice. With the new 1.25% structure, one can do much better; just use your flat rate 1.5-2% card and stack with the Upromise portal. The rounding up and 15% bonus are nice, but not sure it really still eclipses what you can get elsewhere with fewer hoops.