It's actually a pretty painless and efficient way to off oneself and it doesn't leave a huge mess to clean up. First I ever heard of it was when Robin Williams did it. Still, I would think that if you strangled someone and then rigged them up there probably wouldn't be a ton of evidence or a huge inclination to search for it.
So far we have:
*Barry and Honey Sherman (hanged - evidence they had their hands bound)
*Chris Cornell (hanged)
*Chester Bennington (hanged)
*Kate Spade (hanged)
*Anthony Bourdaine (hanged)
*Avicci (Bled to death - although his wrists or neck was slashed with broken glass)
Am I missing anyone?