Libertarians believe that each person has the right to live his life the way he/she chooses as long as he/she respects the rights of others. You can't be against gay rights and be a libertarian. Libertarians are as liberal as you can be on social isues and as conservative as you can be on economic issues.
I would like to ask how the hell anyone could be a libertarian? Do they like oil spills and mine collapses?