It is a page from the playbook of pump&dump-ers. Do anything to move the inventory.

Bitcoin itself is not a stock, but some synthetic security. But the promotional efforts around it are straight from the "caveat emptor" section of the OTC Markets Group (if you allow me a little bit of USA-centrism).

http://www.otcmarkets.com/otc-101/otc-market-tiers

I just love their icon for the "caveat emptor" section of the "pink sheets":