You won't receive payment in Bitcoin but it is tip from other Twitter users if they feel satisfied with your tweets.
The interesting thing is tip will be done on Lightning and you will receive Bitcoin, in satoshi numbers. It is better than tips with altcoins (Brave, Steem, etc.)
If you receive 1000 satoshis, it is 1000 satoshis forever, not like altcoins that will be dumped too fastly.
It is a innovative idea for sure and with the world so concerned about trends and this time, I don't mean trend like it is on the market or trading charts but, with regards to society and the several hashtags out there. Though, there is some little complications to making a good story in a tweet as, you can only type a pack full of words. Never the less, the tips in bitcoins on tweets will go a long way to ensure bitcoin publicity and many stands to be educated and benefit or even earn there first Satoshi from this innovation which would eventually bring them 7nto the bitcoiners fold.