A round-up of the companies, deals, and trends that made headlines.

Every day, the Fortune staff spends hours poring over tech stories, posts, and reviews from all over the Web to keep tabs on the companies that matter. We've assembled the morning's most newsworthy bits below.

• Best Buy (BBY), which saw a 61% spike in profit last quarter, is changing up its store layouts this holiday season to make way for more portable devices: smartphones, e-readers, and touch-screen computers, particularly the Kindle and the iPad. Microsoft (MSFT) and Sony's (SNE) motion-based controllers, Kinect and Move, will feature prominently, too. (Wall Street Journal)
• Microsoft's Bing search engine surpassed Yahoo (YHOO) in market share this past August, making it the number two search engine in the U.S. Though much of that achievement can probably be attributed the fact that Bing now powers Yahoo in the U.S. and Canada. (ArsTechnica)
• Twitter announced a new look for Twitter.com with a two-column interface that takes cues from the recently-released iPad app. Embedded content now shows up in the right column. (Engadget) More