eMusic, the online music “club” that offers members discounts on tracks in exchange for a monthly subscription fee, has struck a deal with a fourth major music label to add tracks to its catalogue. eMusic says its members can now access more than 15,000 albums from EMI.

Main Street Connect, which owns 10 hyperlocal news sites in Connecticut, is expanding its portfolio significantly: The company has just picked up CentralMassNews, which owns ten local news sites in central Massachusetts. That means Main Street Connect will soon have 52 sites—when you include 32 sites that the company says it is launching next month in Westchester County, New York.

Mail.com Media Corp.‘s HollywoodLife has hired AOL’s Denise Warner as managing editor. At AOL (NYSE: AOL), Warner was one of the original employees at celebrity site PopEater and was most recently editor of that site.

LinkedIn (NYSE: LNKD), which will start trading on the New York Stock Exchange, has priced its shares at $45. That’s the high end of the $42 to $45 it said earlier this week it would sell its shares for—yet another sign that demand for the stock is extremely strong. At $45 a share, LinkedIn will debut with a market value of $4.275 billion. We’ll be following how the company’s stock performs tomorrow.

Yahoo (NSDQ: YHOO) is paying $28 million for 5to1, an online ad marketplace that lets top brand advertisers purchase unsold premium inventory on the sites of 20 major publishers. In its announcement, Yahoo says the purchase will allow it to increase the premium inventory it can offer advertisers. 

Zynga has made its 14th acquisition in a year, picking up DNA Games, the two-year-old studio best known for Facebook game Casino City. Zynga says DNA Games will be “the core of a studio focused on creating new games.”

Eventbrite, a popular service which lets people set up webpages to promote their events and also sell tickets, has raised $50 million in a fifth round of funding led by hedge fund Tiger Global Management. The funding round comes as a number of other ticketing startups—including Ticketfly and ScoreBig—have raised their own big funding rounds in recent months.

Demand Media (NYSE: DMD), which told us earlier this year it would be bringing in a senior executive to oversee its mobile strategy, has hired Michael Kirby to fill the job.

LinkedIn, which is set to go public Thursday, has upped the size of its IPO—again—a sign that there’s been extremely strong interest in the stock from investors.

Patch, which has continued to grow rapidly in the wake of AOL’s purchase of the Huffington Post earlier this year, is launching 33 hyperlocal sites in three states with early presidential primaries—New Hampshire, Iowa, and South Carolina. The new sites mean Patch will soon have sites in 21 states, up from its current 18.

Ari Balogh, the Yahoo (NSDQ: YHOO) CTO and EVP of products who left the company a year ago, is joining StumbleUpon as its VP of engineering. The content recommendation service tells us Balogh will be a member of the company’s management team and will “oversee all of the company’s engineering functions including product development, science, infrastructure and internal IT support.”

Primedia (NYSE: PRM), the big print and online real estate listings company, has been sold to PE firm TPG Capital for $525 million, including debt. Primedia’s properties include rental publication Apartment Guide and housing publication New Home Guide, along with their accompanying websites, as well as real estate listings site Rentals.com.

The Alibaba-Yahoo (NSDQ: YHOO) “he says, she says” continues: Yahoo, which already had an embattled relationship with Chinese e-commerce giant Alibaba, in which it owns a 39 percent stake, says that Alibaba handed off a critical unit without its knowledge. In a statement, the company says it was notified on March 31 of two transactions that occurred “without the knowledge or approval of the Alibaba Group board of directors or shareholders.” Those included the transfer of 100 percent of the shares in huge online payment company Alipay to a company controlled by Alibaba’s CEO.

Mystery no more: The WSJ says the $500 million fine Google (NSDQ: GOOG) disclosed it might have to pay earlier this week is related to a DOJ investigation over online pharmacy ads the search engine ran. On Tuesday, Google said it might have to pay the penalty, but it wouldn’t say why.

Technorati, the well-known blog search engine, which has transformed itself into a blog ad network, is switching CEOs. The company has appointed Shani Higgins, who as an SVP led strategy and day-to-day operations of Technorati’s ad network, as its CEO. Higgins replaces Richard Jalichandra, who had led the company for the last three-and-a-half years and will now be executive chairman.

WebMediaBrands (NSDQ: WEBM), which has built up a portfolio of social media-focused news sites and conferences over the last several years, is buying Inside Network, the owner of Inside Facebook and Inside Social Games, among other sites. WebMediaBrands is paying a total of $14 million for the company, including $7.5 million in cash and $6.5 million in stock.

Facebook COO Sheryl Sandberg makes the cover of Bloomberg BusinessWeek‘s latest issue, profiled in an article by Brad Stone that describes her effort to make the social network more efficient and that also spotlights her human side. (Choice quote: “I’ve cried at work. I’ve cried to Mark. He was great. He was like, ‘do you want a hug? Are you okay?”). The article also takes a look at Facebook’s approach to advertising. Read on for an excerpt.

The New York Times’ share of total page views to newspaper websites dropped by its largest margin in more than a year in April, the first full month that it had its paywall up. ComScore (NSDQ: SCOR) data shows that the NYT‘s share of newspaper website traffic was 10.6 percent last month, down from 13 percent in March and 13.5 percent in May 2010.

FriendFinder Networks raised $50 million in its IPO today—the latest in a string of stock market debuts by digital media-related companies. The IPO is a major milestone for the owner of Friendfinder.com and other adult sites, which has tried to go public for several years. FriendFinder had initially filed to go public in late 2008, but later pulled that offering, citing “market conditions.” It had filed once again to go public in mid-March.