Amazon makes a play for toys with YoYo.com

Quidsi is one of the world’s fastest growing e-commerce companies, thanks to its experience and taking an extremely user-friendly approach to selling products online. Its Diapers.com and Soap.com sites were so good that Amazon bought the company in November for $540 million. Since then, Quidsi has successfully launched Wag.com for pet supplies.

Q&A: Amazon’s Appstore for Android is selling lots of games

Amazon wants to sell anything physical or digital. Almost four months ago, the company opened its Amazon Appstore for Android to provide some competition in the Android mobile apps market. That venture has been a success, but so far it likely generated only a small part of the $1 billion in digital revenues that Amazon had in the last quarter — mostly due to the sales of electronic books for the Kindle.