LEADING THE DAY: Google has dropped the curtain on Slide, its social apps company, and Max Levchin, its respected head, is also leaving the company, All Things Digital reported. The group, which made Google social apps such as Photovine and Disco, will mostly “remain at Google to work on other opportunities,” a Google spokesperson told the tech site.

The department had been increasingly neglected as Google’s new social network, Google+, took the lead in social at the company, the report said. Google acquired Slide in August 2010, for $20 million.

Who will lead Apple: As Tim Cook steps up to take over as Apple’s CEO, the question looming over Apple is what, exactly, the company will look like without its superstar chief executive, Steve Jobs, at the helm, The Washington Post reported. Cook, an operations whiz, has the top seat, backed closely by design lead Jony Ive and marketing head Phil Schiller. The company is likely on good footing in the short term, and investor confidence seems to be high, with Apple’s stock closing only 0.7 percent down on Thursday.

Pandora ads worth more than radio ads: One analyst reading Pandora’s cheery quarterly report Thursday worked out that ads on the streaming music site are, by one metric, worth more than radio ads, Giga Om reported. Pandora seems to generate more ad revenue per 1,000 hours than a traditional radio ad, according to one analyst who asked Pandora CEO about his calculation. Pandora CEO Joseph Kennedy reportedly said the analyst’s calculations were “broadly correct” but said that the $58.3 million in ad-generated revenue only counted money made from its Web application and not from mobile.

Holder discusses phone hacking: Attorney General Eric Holder discussed phone hacking Wednesday, telling families of the victims of the Sept. 11 attacks that he found reports of the practice “disturbing,” the Associated Press reported. The department is conducting an ongoing probe into the matter.

Groupon CEO tells staff business is strong: Groupon CEO Andrew Mason sent a lengthy e-mail to staff members to assure that the company is in fine form after reading negative reports about the daily deals site, All Things Digital reported. Mason said that Groupon, which has filed to go public and is barred from making public statements about the health of the company, is growing its core business, beating competitors and doing well in its new lines of business.