If LN would allow payments without first sending a payment request (I'm hoping future versions will allow this), it could be a very cool feature for a campaign that pays for every post. Combined with
a scraper, you could literally be paid a few seconds after each post!
Actually, Lightning Labs has been working on
Sphinx for over a year now.
lncli sendpayment command was mentioned in the LND v0.9.0 changelog so I believe it's fully working now. Note that you might have to use
lncli connect before attempting to send the payment.