The World: Providence - sold to Aegis for $12.5m

Aegis Group has acquired the ad-serving business for $12.5 million, and will integrate the company into the digital network Isobar., which has offices in Rhode Island and London, specialises in campaign management, optimisation and analysis for online advertising.

Aegis said the acquisition of would allow it to give ad customers the ability to "measure activity beyond the click" for online ads.

Bluestreak has a client base across the US, UK, France and Germany, and is credited with engineering the first rich-media ad in the US for Pfizer's Zithromax.