Mark who is behind this is Mark Lyford. He has a history as a scammer. Some of his actions are pretty well documented in these articles:

• Ponzi Accusations Fly As BanxShares Is Set To Be Removed From CoinMarketCap Rankings
• Banx Three Months Later: No BitShares Integration, Less than 1% Sold, Network Is Down
• Mark Lyford Opens Banx Sales, Quickly Becomes Worthless

I'm downvoting this post because I want to discourage people like Mark Lyford building their businesses on top of the Steem blockchain.

I suggest that everybody else downvotes this too. Let's keep Steem free of scammers!