[Roscoe]

The Libertarian Party does not equal libertarian philosophy.

The title of this thread is "What Libertarianism Isn't".

[Celtjew Libertarian]

Celtjew Libertarian:
The Libertarian Party does not equal libertarian philosophy.

Roscoe:
The title of this thread is "What Libertarianism Isn't".

It's standard practice in English to capitalize all non-minor words in the title. Unless, you're one of those left-wing, post-modernist fruitcakes, who thinks that punctuation and grammar don't matter.