No Regrets for the Founder of Tumblr After Yahoo Sale

While conceding he was “terrified” going into the deal, David Karp says he is happy with the autonomy the microblogging service has under its new owner.



News From the Advertising Industry for the Week of Jan. 27

Account assignments, executive appointments and miscellaneous news from advertising agencies.

    



Advertising: Reborn, Dell Aims Message at Businesses

A campaign focuses on corporations and the computer company’s entrepreneurial roots.

    



Disney Struggles to Make Its Free Gaming Apps Pay

Mobile games are a major growth opportunity, and analysts say a recent flop underscores the challenges Disney faces in a shifting marketplace.

    



IBM to Announce More Powerful Watson via the Internet

Companies, academics and individual software developers will be able to use Watson at a small fraction of the previous cost.

    



Google Is Ordered to Block Images in Privacy Case

The Internet company said it would appeal a French court’s ruling that it strip from its search results nine images of the former European racing chief Max Mosley.

    



Barnes & Noble to Release New Version of the Nook

The new device comes as the bookseller, the nation’s largest bookstore chain, continues to face questions about its long-term viability.

    



What Can Be Sold in 140 Characters? That’s Now the Challenge for Twitter

In documents filed on Thursday, Twitter noted that it has been greatly expanding its inventory of advertising slots, especially for promoted tweets.

    



Future of 3-D TV Murky as ESPN Ends Channel

ESPN’s move spurred a debate about whether anyone would be left watching in 3-D television soon, and whether anything would be available worth watching.