Discussion tweaks

Compacting comment style a little...

![image](https://cloud.githubusercontent.com/assets/960919/4476464/42ae5e24-4976-11e4-8ca3-e5bab028626c.png)

`($gs-baseline * 2) / 3` and `$gs-baseline * (2 / 3)` both mean the same thing so not sure this is necessary or useful?