Publicis' flagship media agency has published its latest global advertising expenditure forecast, suggesting that Europe is "acting as a brake on global ad growth" compared to the flourishing networks across the world.

September has been the month of redesign for the U.S search giants - first Yahoo!, then Bing. And now, Google, the biggest of them all, has unveiled a remarketed app launcher as well as a new logo.

Publicis, the Parisian advertising giant, has secured the acquisition of London digital agency Poke for £10m.

An anonymous source purporting to work for Google has suggested that third party cookies - collected for targeted advertising - will be replaced with a new software not unlike Apple's iAd, which collates mobile data. Safari has blocked third-party cookies since 2003.

Following the fine example of Yahoo! over the last month, Microsoft search engine Bing has overhauled their design and added two new features to improve results.