Well that's one way to donate blood...

http://m.huffpost.com/uk/entry/5403258?1401281140

But are they all just roll players?? 

Contact me if you are real...if you dare!!

Tesla's Spirit radio

http://higherperspective.com/2014/05/build-spirit-radio-creeped-tesla.html#5DYPlImAkG7xSwEY.99

Is this the real origin of spirit boxes, and spirit radios that we use today in paranormal investigations? If so does this answer some questions about what we are hearing??