Adults with little Internet experience show changes in their brain activity after just one week online, a new study finds. The results suggest Internet training can stimulate neural activation patterns and could potentially enhance brain function and cognition in older adults.

Barnes & Noble Inc. is expected to unveil an electronic-book reader to compete with Amazon.com's Kindle in the still-small arena where some see book-selling's future playing out. The New York Times reported that the reader, to be announced Tuesday in New York, will be called the "Nook" and sell for $259. The newspaper cited an ad set running in its book review section Sunday.

Apple has introduced an in-app purchase feature for free iPhone apps that allow you to fulfill transactions within the iPhone applications themselves -- no Apple App Store required. The feature was previously available for paid applications.