Horrible Party.
As a Libertarian in philosophy, the idea of the Libertarian philosophy having a party is absolutely ridiculous. The party steals votes from candidates (mostly Republicans,) and hands elections to candidates who wouldn't necessarily win in a head-to-head match up. If Libertarians truly wanted to "fix" the system, they'd infiltrate the Republican and Democratic parties and have them change their platforms. But instead, they want to start their own club at the expense of true democracy. Don't get me wrong, I support their right to exist, but their existence, frankly, isn't necessary.
FP for this reason and a few others, namely giving me someone to vote for if I am stuck with two awful major party candidates.