London-headquartered marketing services conglomerate WPP Group has acquired a 25% stake in US business Visible Technologies, which specializes in online reputation management and information tracking.

The Seattle-based company provides products and services to help businesses manage their brands' reputation online, as well as track, analyse and participate in blogs and social network sites where brands are discussed.

Says a WPP spokesman of its tie-up with Visible: "Their internet technologies will be able to step into the WPP fold immediately and improve the capabilities and overall scope of the services offered by our public relations firms."

Data sourced from; additional content by WARC staff