Technology angel investor and Silicon Valley entrepreneur Scott Banister has donated $200,000 to the yes campaign for Proposition 205. The measure would legalize marijuana in Arizona. Banister has been an investor in Facebook, PayPal, Zappos, Uber and SpaceX. Banister was a co-founder of technology companies IronPort Systems — which was bought by Cisco Systems — and SubmitIt while in college at the University of Illinois.