On another note,

Why the 'snippet' additional step when creating new fiddles?

Being able to do:

curl -X POST -d @test.json https://jsonbin.io/b/new

will be cool!

I thought that's how it works?

https://jsonbin.io/api-reference

$ cat test.json

{}

$ curl -X POST -H "Content-Type: application/json" -d @test.json https://jsonbin.io/b/new

{"success":false,"message":"Snippet parameter is missing"}

$ echo '{"snippet": "{}"}' > test.json

$ curl -X POST -H "Content-Type: application/json" -d @test.json https://jsonbin.io/b/new

{"success":true,"data":"{}","id":"..."}

Oh, you're right. My bad. Maybe they want to leave room for meta data in the future or something.

Ads? Simplest way to sustain. Pastebin does it.

Pastebin has user friendly content though. People sit on the pages for a long time reading content and they can deliver ads related to the text blobs.