Twitter mobile users can now click on a tweet in their stream to purchase a product via a new mobile shopping experience from Payvment.

Twitter CEO Dick Costolo recently held a press conference at the company’s headquarters. The event marked the first time that Twitter disclosed the actual number of its active users.

LivingSocial has enhanced its mobile application to support Twitter integration in iOS 5 to provide consumers with a quicker means to free deals.

Nonprofit organizations such as the American Red Cross and the Salvation Army, wireless carriers and a range of celebrities have stepped up to issue mobile calls-to-action to raise funds to support victims of the tragedy in Japan.

RedLaser partnered with Atlantic Records music artist Lupe Fiasco to promote his new album “Lasers” and drive pre-order sales by encouraging fans to scan a QR code.

The Seminole Hard Rock Hotel & Casino rolled out a mobile Web site and applications for Apple’s iPhone and Google’s Android devices in a move that recognizes the hospitality industry’s growing foray into the mobile space.

NEW YORK – An NRG exec said his company tapped SAP AG to enhance its customer relationship management platform by adding mobile and social elements to its direct-to-consumer and business-to-business initiatives.

Ordering take-out dinner or movie tickets from your phone is one thing, but Carnival Cruise Lines is stepping up its game with a new commerce-enabled mobile Web site that lets users book entire cruise vacations on the go.

British carrier Three UK has extended a new Facebook and Twitter-friendly music store from Android-based handsets to more of its mobile phone customers.

Sporting goods retailer Sports Authority is targeting extreme sports fans attending the X Games with a mobile-social call-to-action to support the fight against breast cancer.