It's a protocol, not a product. Just make a new product that uses the protocol and there you go, a new name.
100% agree - names matter.
I don't think you say you contact over some HTTP or HTTPS protocol, you just say that you contact over twitter or fb or some other product that is built on top of this :3 In the same way scuttlebutt is just the name of the protocol not the product.
Users manipulate applications named Patchwork or Patchbay, for instance. Scuttlebutt is the protocol.
Ya, I would be afraid to ask an acquaintance if they are on scuttlebutt. It sounds like some kind of illicit pirate drug in that context. I wonder if Facebutt would be trademark infringement...