This is kind of surprising considering how much the price has been dropping and how much negativity has been spread about Bitcoin recently. I would never expect there to be 50k users a day signing up. That's incredible.
How many of them are actually purchasing the coin, is the real question. It's easy to sign up but a lot of people just keep the account open for a while before making a decision to put money into it. Maybe we need some more currency crises and some geopolitical chaos to stir things up a bit and get people running towards Bitcoin.