Facebook's 1.5bn users will soon be able to vent their anger in a new way after the social network revealed it is working on a "dislike" button. Founder Mark Zuckerberg announced the move at a public Q&A session at Facebook's headquarters in Menlo Park, California.

Trinity Mirror is in talks to take over one of the country's biggest publishers of local newspapers for GBP200 million. The owner of the "Daily Mirror" and "Sunday Mirror" already owns 20 percent of Local World, a news group focused on the Midlands and the southeast, and wants to buy the remainder of the shares.

Tesco and Morrisons are distancing themselves from more big TV ad campaigns, instead talking up improving the in-store experience as the best way to rebuild their faltering brands. "You can't advertise your way out of problems you've behaved your way into," said Tesco's CMO Michelle McEttrick at an Oystercatchers event last week.

Brands are increasingly including customer experience in CMOs' remit as the 24/7 nature of consumer interactions means that marketers must be responsible for every touchpoint -- from stores to apps, not just the marketing campaign or social media strategy.

Speaking ahead of his Dmexco appearance, Facebook's lead Atlas spokesperson counters claims that his ecosystem qualifies as a "walled garden," adding that its detractors are envious of the quality of its data, and that the social network's protection of its data is born out of its commitment to user privacy.

Reportedly, over 300 posters -- previously housed at the Museum of Cruel Designs exhibition in Banksy's weird and wonderful Dismaland -- cropped up across the capital yesterday morning, coinciding with the first day of London's DSEI Arms Fair at the ExCel Centre in London, where arms are showcased and exported across the globe.

New research undertaken by eMarketer suggests that global ad spending is set to grow at a slower rate than was previously forecast; however, spending on paid media will increase by 5.7% in 2015. This is predominantly boosted by an 18% increase of investments in digital advertising, as the desire by consumers for digital media continues to grow at rapid speed.

"International Business Times" is an expanding UK news Web site with a priest for an editor who is preaching an encouraging message for journalists. The good news from George Pitcher is that it is possible to sustain a serious news operation with online advertising alone. Pitcher says that "IB Times" turns a profit (although he declines to reveal how much) and that it does so largely thanks to income from display advertising.

Mobile advertising is set to overtake newspaper expenditure in the UK this year and globally in 2016 - a year earlier than previously predicted, ZenithOptimedia has forecast. It predicts that mobile advertising will grow 38% in 2016 to $71 billion (GBP47.3 billion), while newspaper advertising will shrink by 4% to $68 billion. Meanwhile, mobile Internet will be the third-largest advertising medium, behind television and desktop Internet.

Burberry has been crowned social media king of all FTSE100 companies for the third year on the trot following an analysis of each firm conducted by Battenhall, which showed the fashion house to have 1.4m followers. The research found that Sky had the greatest social media influence overall with in excess of a million followers, whilst pharmaceuticals firm Shire had the least impact -- courting a paltry 30 followers. In terms of individual CEO's, Dixon's Carphone's Sebastian James topped all others at 30,350 followers.