I compare that to the http referer sent by browsers, it's useful for developers, highly unknown from non-developers and it's not really good from a privacy stan

I compare that to the http referer sent by browsers, it's useful for developers, highly unknown from non-developers and it's not really good from a privacy standpoint. I don't really know where the line between helping developers and protecting privacy must be drawn but in doubt I've the weakness to always err on the side of privacy.