Most read news in advertising, marketing, media and PR (2 - 8 Dec 2012)

Sir Martin Sorrell's media powerhouse, GroupM, became the latest group to downgrade its global ad forecast for 2013, from 5.3% foreseen in June, to 4.5%, citing "continued sluggishness in the US and European economies". (Campaign, Monday 3 December)

Marmite unveiled a digital interactive bus shelter where visitors can take pictures of themselves to upload onto a screen on London's Oxford Street, as part of its Christmas lights campaign. (Campaign, Tuesday 4 December)

MasterCard UK appointed Kedesh Mather from Samsung as senior PR manager. (PRWeek, Tuesday 4 December)

Men's magazine FHM sparked a wave of protest on Twitter after running a feature referring to a woman as a "girlfriend/mother/victim", prompting accusations of "normalising" violence against women. (Marketing, Tuesday 4 December)

Virgin Media said it was seeking to "reinvent" its retail strategy with a flagship store that will push its "next-generation" services. (Marketing, Wednesday 5 December)

Tesco handed Matt Atkinson the responsibilities of CMO Tim Mason, who left the company amid a strategic review of Fresh & Easy, the chain's attempt to break into the US. (Marketing, Wednesday 5 December)

Starbucks brought in RLM Finsbury to guide the firm through its reputation-damaging tax avoidance issues. (PRWeek, Wednesday 5 December)

OgilvyOne won the Grand Prix at the DMA Awards after its campaign for an industrial weighing scales manufacturer won gold in nine categories. (Campaign, Wednesday 5 December)

Absolut appointed Sid Lee to its global advertising business after a pitch, in a move that threatens TBWA's 30-plus-year relationship with the brand. (Campaign, Wednesday 5 December)

GolinHarris was awarded the gold medal in PRWeek's Global Agency Report 2012. (PRWeek, Wednesday 5 December)

Instagram, the photo sharing site that was recently acquired by Facebook, disabled a feature that improved the way its photos are displayed in Twitter users' streams. (Media Week, Thursday 6 December)

YouTube revealed the 10 ads most viewed by UK users in 2012, in a list topped by Honda UK’s "spark" ad by Wieden & Kennedy London. (Campaign, Thursday 6 December)

It emerged Carlsberg was talking to networks about a global advertising brief. (Campaign, Thursday 6 December)

Starbucks ran an open letter in newspapers from managing director Kris Engskov, which claims the company will pay "significant" tax in the next two years, regardless of profits. (Marketing, Friday 7 December)

Carolyn Everson, Facebook's vice president of global marketing solutions, is relocating to the UK for six months and instituted a restructure of its UK and pan-European sales operations. (Media Week, Friday 7 December)