I always try removing the shit after the ? and if it doesn't affect the destination of the link at all then I assume it's tracking bullshit and in my opinion you should too.
Firefox even provides a thing to do this for you. You don't even have to know about utm.
Just right click on a link. Or the URL bar (or location bar or whatever we're calling it). It's got logic in there to keep essential things (i.e. ?v=video_id on youtube.com full URLs) and nuke the everything irrelevant.
Gaze in amazement as your five miles of URL turns out to be merely 6 cm long.
Edit: apparently this does not work as well as advertised on some major websites. Sigh.
Stop relying on Firefox's "copy without site tracking". I've tried it on many of the big websites and it doesn't remove shit. As far as I know it might as well be a placebo.
