Mobile video marketing company Mogreet has raised $4.1 million in a new round of venture funding led by Black Diamond Ventures and including DFJ Frontier Ascend Ventures, Bryant Park Ventures and Draper Associates. The new financing brings Mogreet’s total raised to date to $14.1 million. The company said it plans to use the fresh capital to continue enhancing moShare, its new mobile-sharing platform allowing users to text videos, pictures, music and stories to friends' mobile phones from any Web page. That effort builds on Mogreet’s core service of helping companies harness MMS (multimedia messaging service) for mobile marketing …

Twitter will open an office in downtown Detroit to better serve marketers and advertising agencies. Led by Greg Myrick, a sales executive hired from Yahoo, the Detroit office is the latest in a series of sales offices the company opened in the past year in cities, such as Washington, DC, Cincinnati, Austin and Atlanta, adding to Chicago, New York, Tokyo, London and Dublin. The handful of Twitter employees in the city will work from the M@dison Building, a co-working space located in a historic 100-year old building shared by several tech startups in the city.

Yahoo Wednesday confirmed the company is laying off about 2,000 employees as part of a broader effort to reduce costs and create a smaller, more streamlined organization. The embattled Web portal said it expects to realize about $375 million in annual savings from the move and will take most of a pre-tax charge of $125 million to $145 million relating to severance costs in its second quarter. The blog AllThingsD, which first reported the expected layoff of 2,000 Yahoo workers Tuesday, suggested they could be just the start of wider employee cutbacks. It also indicated the immediate cuts …

After acquiring myYearbook last year, Quepasa Corp. had two prominent brands in the social discovery space. To unify its presence in the marketplace, the company will rebrand as MeetMe, starting with myYearbook in July. Latin-American social platform Quepasa and its affiliated brands will also adopt the new name. "MeetMe reflects the company's mission -- to build the leading social network for meeting new people -- and underscores what our members across the Americas already expect each time they log in," said John Abbott, CEO of Quepasa Corporation, in a statement Tuesday. The company said it considered 1,000 potential names …

Mobile startup shopkick has turned to Big Oil for its latest retail partner. Under a new deal, ExxonMobi will let customers who use the shopkick app at its gas station convenience stores earn points that can be redeemed at the stores of other retailers that work with shopkick. Unfortunately for consumers reeling from high gas prices, the rewards don’t include discounts at the pump. Customers using the location-based shopping app at 375 participating ExxonMobil locations in Miami, New York and Washington, D.C., however, will gain points, or “kicks” just by walking in the door. The kicks can be redeemed …

TRUSTe today is unveiling a new tool that will enable mobile companies to inform iPhone and Android users about targeted ads and allow them to opt out.

Havas today confirmed it has acquired a majority stake in Victors & Spoils, the Boulder, Colo. Agency that was founded in 2009 by former Crispin Porter + Bogusky vice presidents Evan Fry and John Winsor. The shop is credited with being one of the first agencies to use "crowdsourcing" as a business model. V&S's client roster includes Chipotle, Coca-Cola, Converse, Crocs, Discovery Channel, Dish, GAP, General Mills, Harley Davidson, Levi's, Mercedes Benz, Oakley, PayPal, Smartwool, Smashburger, Unilever, Virgin America, WD-40.

Android for the first time surpassed 50% penetration on U.S. smartphones as of the end of February, according to the latest data from comScore. That’s up from 33% a year ago, and from 48.6% in January. Apple’s iOS trailed with 30.2% market share in February, up from 29.5% the prior month. BlackBerry and Windows Phone, however, both continued to head in the wrong direction. The RIM platform had 13.4% share, down from 15.2% in January, while the Microsoft mobile operating system, fell from 4.4% to 3.9%. Looking at mobile usage, nearly half of U.S. mobile users (13 and older) …

Is it redeisgned, revised, or new? Buick will begin selling selling the 2013 Enclave later this year, and is showing it now at a press event prior to the New York Auto Show. I was speaking to a designer who explained to me that it's not easy to evolve a vehicle whose desisgn was a big point of its appeal.

Long-time radio sales guru Erica Farber has been named the new President-CEO the Radio Advertising Bureau, replacing Jeff Haley, who resigned to pursue a "new opportunity."