Opera 12 supports Mozilla's "Do Not Track" header
The H-Online: Opera has published a development snapshot of version 12 of its web browser that adds support for Mozilla’s “Do Not Track” (DNT) header. Code-named “Wahoo”, the unstable release is the first from Opera to support the DNT header, which signals web sites that the browser user wishes to opt-out of online behavioral tracking; online advertising networks use cookies and other web technologies to recognize internet users and serve them tailored advertising....