With a gist you're able to quickly and easily upload a single file script (or multiple files).
Also once created you can clone it as a git repo and make updates and push back to it (e.g. add files etc). Also people can fork your gist just like git repos.
I like this approach rather than creating a "new repository" on github for small scripts or snippets because then your github profile doesn't get cluttered with small snippets and script repos and is reserved for actual "project" repos.
With a gist you're able to quickly and easily upload a single file script (or multiple files).
Also once created you can clone it as a git repo and make updates and push back to it (e.g. add files etc). Also people can fork your gist just like git repos.
I like this approach rather than creating a "new repository" on github for small scripts or snippets because then your github profile doesn't get cluttered with small snippets and script repos and is reserved for actual "project" repos.