It would be super awsome if NodeBB would have a module that would allow to tip users (something like on reddit) or just award them for the posts.
The way I see it:
- using Kapitalize npm module - can connect to almost any cryptocurrency daemon through RPC connection
- upon registration every user would be given custom-generated bitcoin/altcoin address (easy with Kapitalize)
- in the user page user's bitcoin address would be shown with current balance and withdrawal possibility
- in every post an icon to tip - when clicked it would show a dialog to get the amount of the tip
And more advanced features:
- it would notify user of tip received
- it would show from what user the tip is from (based on bitcoin address?)
It's just my dream 
I hope you see the potential in this...
I'll try to make it myself, but I'm a poor nodejs programmer.
Cheers!