Yesterday I have enabled Bountysource for live helper chat github repository. And purpose of all of this is

1. You can create an issue and back it. Let say you want some feature and want to prioritize it so you can do that. You create an issue and then on Bountysource support it's development.
2. Prioritize issues
3. Only then issue is merged into master branch bounty can be collected.

In other words it's just another way to support a project. And backed issues will be done the very first.