In layman's terms, an API is a bridge that lets two computer programs talk to each other. In order for a merchant to accept Dash right now, they need to run their own full node, handle their own wallet.dat files, manually process all transactions, etc. No merchants have any interest in doing that, nor does it scale.

Merchants that accept crypto use APIs provided by companies like blockcypher, and these APIs handle all the heavy lifting. The merchant just puts a "Pay with Dash" button on their website, and blockcypher's API actually interacts with the blockchain and sends the transactions on the network. The API basically does all the "back office" stuff so that a merchant can just accept Dash and not have to worry about the technical nitty gritty details of how it works.

EDIT: If you go to Walmart, does the cashier take your credit card, call the number on the back of the card and verify your account balance? Then ask the person over the phone to please authorize a transaction for $x? No, of course not. Walmart has a pin pad and back office computer system that does all that--slide your card and the software queries the payment networks and handles all the heavy lifting. The cashier just sees "approved" or "declined."

Oh I know, let's also require posts on the Dash Slack and Forum to "lock in" a certain amount of Dash!

what's the difference between this "DAPI" and the API of blockchain.info?

If I remember correctly, it was a whale that placed a large buy order at the wrong price.  Added a couple extra zeros??

RIPPLE LOL!  Just mine a gazillion coins and if it's worth at least 1 satoshi then you're in the top 5 marketcap.  

ahhh so the fat troll was dnaleor? I thought it was smoothie..

EDIT: I don't mean fat troll to be rude.. I just meant that the guy trolling in the video was fat.. didn't mean offence