Greenberg got a letter from Visa in the mail, but he doesn’t think he’ll take them up on it:

Received letter about Visa Black card, made from carbon graphite: slightly intrigued. Annual fee is $500: not even slightly intrigued.

The Visa Black Card is inspired, naturally, by American Express’s Centurion Black Card. Imitation is the highest form of flattery- and, Visa hopes, the most profitable form as well. Both cards have annual fees (Visa’s is actually $495), exclusive concierges, black exteriors, and a veneer of luxury. Instead of focusing …

Entrepreneur mdjensen tweets that he’s looking for the best way for his customers to pay online:

If I offer Google Checkout and PayPal, is that enough or do people just want to put in a credit card? Please respond, I need to know!

Before we can determine which is the best way for customers to pay online, we should review the three most popular options for paying on the web: Google Checkout, PayPal, and traditional credit cards.

Google Checkout …