Last year Jackson's death spurred a boost in Sony's sales. But that's over, and the trend line is pointing down yet again.

You have to hand it to the ego-soaked imagination of singer Kanye West, who has debuted what appears to be the longest music video of all time for his song "Runaway." It's not just his Twitter rants that are wild, as you will find after digesting this gem--an art film, really.

Singer Justin Timberlake might say he’s bringing sexy back, but a new lawsuit alleges online pornography companies are using his song to bring sexy a little too far. Eleven record labels including Warner Bros. Records and Atlantic Records have filed a copyright-infringement suit over the use of songs like Mr. Timberlake’s “SexyBack,” Katy Perry’s “I Kissed a Girl” and Michael Jackson’s “Don’t Stop (Til You Get Enough)” by adult Internet sites.

The Dow dropping 1,000 points is a big deal, but it didn't seem to be a wipe-out-the-Web-sized deal.

With group-buying Web sites, getting more people to join in on a deal gets you a better deal.

My 2010 start-up that passes the slightly-less-raised-eyebrow test is Groupon, a group-based social buying service that nabbed another $30 million in funding in December. So earlier this week, I sat down with Groupon's Midwesternly-nice Andrew Mason, 29, to talk about where the start-up is headed with its pile of dough and growing base of consumers who want to make a deal.

The music industry's decline has been so prolonged that this now qualifies as a man-bites-dog story: Sony says its music sales actually went up, just a bit, in the last quarter. Thank Michael Jackson and Susan Boyle.

While an iPad in the wild--held up by Stephen Colbert--got a lot of ink, here's a video from last night's Grammy Awards, which went all "Avatar" during a tribute to the late Michael Jackson--when a panoply of belt-it-out singers performed one of his posthumous songs with a 3-D twist. In fact, much of the audience was wearing 3-D glasses--including Beyoncé, pictured here--to properly experience the performance of "Earth Song" and its accompanying film, which was supposed to be part of Jackson's "This Is It" tour.