WPP, the highly acquisitive media and advertising giant led by frontman Sir Martin Sorrell, has announced that Possible Worldwide, its interactive marketing agency, has acquired a majority stake in Fortune Cookie, a full service digital marketing services agency. Fortune, which specialises in providing design and build, mobile and tablet apps and site development, online marketing services and digital strategy, will combine its business with that of Possible Worldwide in the UK to provide an enhanced service offering to its global clients.Fortune's consolidated revenues for the year ended August 31st 2011 were around £9.4m, with gross assets at the same date of around £2.8m.The agency, which employs over 190 people, is headquartered in London with operations in Poland, the Netherlands, US and Australia. "This investment continues WPP's strategy of developing its services in fast-growing and important markets and sectors and strengthening its capabilities in digital media," WPP said in a statement.NR