18 months ago we made the openlayers tag a synonym of openlayers-2 as a result of Should openlayers-2 and openlayers be synonyms?
Although I am not an OpenLayers user, it now seems to me that most OpenLayers questions are about OpenLayers-3. Consequently, I think that it is time to redirect the openlayers tag to be a synonym of openlayers-3.
If this gets approval to be implemented then, frequently at first, you may find OpenLayers 2 questions when searching using the openlayers-3 tag, and if you do, then I would encourage you while editing them to replace the openlayers tag with openlayers-2.
Should we make the openlayers tag a synonym of openlayers-3 (instead of openlayers-2)?