O2 (UK) Telefónica O2 had a long-standing relationship with Arsenal F.C., being their shirt sponsor until the end of the 2005/2006 season. In 2005, a three-year deal was signed that saw Telefónica O2 become the team's exclusive mobile communications partner. O2 were the main sponsor of the Channel 4 reality TV show "Big Brother" from its second series (as BT Cellnet) in 2001 until its fourth series in 2003. They also sponsored the spin-off shows "Celebrity Big Brother 2" in 2002 and "" in 2003. In total O2 sponsored five series of the show. O2 sponsored music festivals, the Wireless Festivals, from
Shift Communications Shift Communications Shift Communications is a marketing firm based in Boston with offices in New York, San Francisco and Austin. The company was founded in 2003, when the assets of former public relations firm Sterling Hager was acquired by three of its executives. In 2006, it created the first Social Media Release. The firm's primary practices areas are in the healthcare, technology and consumer markets. Shift Communications was founded in May 2003 out of a technology PR firm, Sterling Hager. Mr. Sterling Hager sold the firm's assets to three of his executives, Jim Joyal, Todd Defren and Ed Weiler, who