Rebis -
I'm in a solid blue state, I could drive a couple hours and go stumping in Pennsylvania, but I don't think I'm gonna help all that much.

My state is going to Obama, McCain hasn't even tried to campaign here. Voting for a third party candidate not only registers a dislike for this monopoly of only two choices we have today, it forces the campaigns to consider alternative view points, and why those people didn't vote for them.
I've protest voted in 2 out of 3 elections. Perot, Gore, Nader. I was pissed at "Don't ask, Don't tell" so I refused to vote for Clinton (I was only 20), Gore/Bush I actually liked Gore. Bush/Kerry...... I thought Kerry was a marginal improvement, but I knew the state was going to him, and I was pissed that the media railroaded Dean out of the campaign (I *did* door to door signature gathering for Dean).
I don't regret my decisions, because in each case, Clinton, Gore and Kerry carried the state, just like Obama will.
However, I actually like Obama - so I'm still deciding if I'm going to protest vote or just straight up vote.
Since the electoral college negates the meaning of my vote in actually choosing a president, I chose to use it in a way that gives it meaning to me.