It’s not publicly available in the US yet, but you can join via invitation. it’s already be publicly available in Canada for a while.
For those who worried about disclosing your credit card info., feel free to stay away.
Currently, you could earn 20pts per $1 on Amazon, 15pts per $1 on starbucks,10pts per $1 on walmart, etc. (10pts=1 cent).
it also has some offers currently available, one of them is the boxed offer, you earn 20,000 pts ($20) when you spend over $50. I think it could stack with the AMEX offer to make the deal sweeter.
If you purchase something through a post on our site, Slickdeals may get a small share of the sale.