Bitcoin is Scam. Short-lived CEO and co-founder of PayPal - Bill Harris has written his own opinion on cryptocurrency, Bitcoin. According to him, he claims that bitcoin is a fraud. He said it was an incredible pump and dump scheme, never seen or experienced in the world.
I believe that he just does not like the possibilities that Bitcoin provides, because of Bitkoin absolute popularization will lead to situation when Pay Pal is not needed by anyone.