Yes. They don't self classify in any remotely useful way.

// But I'm using Pinboard.in, with multiple bookmaklets to auto add to a given tag with one click. My "tag this as devops" bookmarklet:

    javascript:q=location.href;p=document.title;void(t=open('http://pinboard.in/add?later=yes&tags=devops&noui=yes&jump=close&url='+encodeURIComponent(q)+'&title='+encodeURIComponent(p),'Pinboard','toolbar=no,width=100,height=100'));t.blur();