The "do not track” option of the browser should not be ignored regardless of the browser used, its version or its default settings. This means especially IE10 and IE11.

It is more important to protect users against unwanted/uncontrollable tracking than to enable the collectors to get user data.

Data collection and its analysis must be based on an explicit agreement between all affected parties which means, any behavior of the sytems must be clearly declared and all available functionality must work as expected.

Kind regards,
Jonas Lanz