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My Offers taps what AmEx calls the "spend graph" to give cardmembers access to deals and discounts at nearby merchants. And it knows your mom couldn't care less about getting 50% off tickets to a three-day electro-fest

Private equity's been getting a bad rap recently. But for some business owners, it's the best way to get growth capital.

Verizon and AmEx have plans to let customers order items simply by typing in their phone number. It's all about integrating AmEx's Serve platform into the phones and tablets Verizon sells--an expansion of some fledgling "pay by phone" systems, and very different than the systems other teams are planning for the future of mobile payments.

Start-ups are always looking to increase revenue or save costs. When Sean Harper was running his e-commerce business, he started looking at costs, and zeroed in on how much he was paying his credit card processor

You know what you love about the iTunes App Store: You enter your payment information once, and then immediately, all of the world's digital content is available at your finger tips.

1. Microsoft has closed its guerilla design/thinktank lab Pioneer Studios--the group behind the highly-praised but then cancelled Courier tablet concept.