SnapChat's share of voice has fell off the face of the earth, from a branding perspective it is scary. We don't know their user numbers but the buzz has fell flat and the uncool whatsapp just increased their userbase after the facebook deal. I would be scared as an investor if i invested at a billion dollar valuation, since we are not seeing that stable share of voice instagram had. Maybe its a result of bad engineering like Friendster but who knows, they have enough ,money to hire good engineers especially security specialist but their CEO seems to be a bit immature.