[KozmoNau7]

They send the header, but with which value? I probably didn't express myself well enough, I want my browser to send the "DNT not configured" value.

[rejberg]

Sorry, I left that part out. My browser sends DNT=1, and I get 1/1.67, which should mean that 1/1.67 browsers send DNT=1. This means that the total share of browsers that send the DNT header at all is at least 1/1.67, but probably higher.