"MySpace Music hasn't yet saved the digital-music business, and it's a long way from adding to parent News Corp.'s bottom line," says Ad Age's Michael Learmonth. Already, the record labels that are partners in the joint music venture are starting to get fed up. They've had high expectations that the social networking giant could help drive digital sales, but so far, MySpace Music has had a lot of success attracting visitors -- 27 million uniques in April -- but not a lot of success selling downloads, which are by far the most lucrative revenue source for the labels."Without putting …

TechCrunch's Erick Schonfeld says that one of the next big things in search is taking all of the unstructured data spread across the Web and making it searchable. "It is easier to get answers out of a database where everything is neatly labeled, stamped, and categorized," he says. Well, not surprisingly, Google is trying to tackle that problem with a new initiative called Google Squared, which was mentioned at the company's Searchology briefing yesterday. Google Squared returns search results in a spreadsheet format, with the aim of structuring the unstructured data on Web pages. Michael Arrington uses …

Peter Kafka at All Things D reports that CBS digital chief Quincy Smith is planning to leave to start his own boutique investment bank or consultancy sometime this summer, according to sources. Smith has been running the CBS Interactive unit since November 2006. CBS declined to comment. Kafka says that becoming a dealmaker would be in line with Smith's previous experience, as that's exactly what he did prior to joining CBS. In fact, his last job was at media banking company Allen & Co., where he underwrote a slew of Silicon Valley deals, including Google's $1.6 billion …

Boxee TV is a controversial new startup that has caused more than a few people to ditch their cable and satellite subscriptions. Boxee's free software houses music and video content in a single location. When users buy a cable to connect their PC to their television (which costs $10), then they can enjoy Web programming on a big TV that they'd otherwise have to view on a smaller PC screen. According to founder Avner Ronen, 80% of users make the connection between their PCs and TVs. Boxee already has 500,000 users. Some customers are so satisfied, that they're doing away …

"If Twitter is experiencing a 60 percent abandonment rate every month, as Nielsen recently suggested, those people sure are being replaced at an awfully fast clip," says TechCrunch's Erick Schonfeld. Indeed, Twitter kept up its torrid growth in April, reaching 17 million unique visitors in the U.S. -- an 83% increase over March's 9.3 million uniques, according to comScore. That's down from 131% growth in March. Also, last month, comScore estimated Twitter's global visitors at 19 million, but the research firm did not release updated global estimates for April. Twitter worldwide could now very well be past …

"Powerful forces are working against free, legal online TV," says Wired's Frank Rose, citing the recent decision by News Corp. to pull episodes of FX's "It's Always Sunny in Philadelphia" for essentially becoming too popular on Hulu. Whereas every episodes of It's Always Sunny used to be available on the site, now users can only see the five most recent shows. Why, because "the availability of such shows on Hulu threatens two of the key financial underpinnings of cable TV: DVD sales and carriage fees, says Rose. Cable and satellite providers pay big money for the right to carry FX …