We use American Express almost exclusively in our house, largely because they automatically tally and organize our spending habits (making it much easier to organize income come tax time). American Express isn't accepted everywhere, but not to a fault. Ponzi turns to me a few minutes ago and says… “American Express has RSS!” I didn't believe her, until she showed me the message. I clicked on her co-branded link and… witnessed what a few folks (namely Dave) were talking about at Gnomedex this weekend. It's like catalogs! I'm not sure how good the feeds are going to be, and I don't know why they're in beta, but it's cool to see AmEx embracing syndication. MasterCard is no longer everywhere I wanna be.