Questions that have a specific focus on people in the European region, more specifically when it is not necessary to use country-specific tags (such as [tag:united-kingdom]).
Some questions require answers that may be specific to a certain region and so this is when this tag (and also other location tags such as united-states or japan) should be used. When using this tag, it is presumed that the culture/situation reflects that of the average European person. Furthermore this tag should not be used in conjunction with tags of European countries (such as united-kingdom, as if a more specific tag can be used it should be.
This tag should be used along with other tags that describe the situation which you find yourself in (such as friends).