I didn't vote for Nader in 2000 (I wasn't old enough), but I would have, even if I had known everything I know now.
The night before election night, I saw him speak. I had to sneak out of my house after my parents went to bed, because they wouldn't have let me stay out until 2 on a school night. I was a nerdy high school senior who had actually read Unsafe at any Speed.
He was speaking at the University of Maine Portland at midnight, and there were about 500 people waiting to see him. We ended up waiting until two just to see him because his plane was delayed twice. But no one left. There was an overflow crowd and I couldn't see (I'm 5'2"), so a man let me come in and sit in the aisle (all of which were filled).
It was absolutely amazing. He actually talked about things I cared and worried about. Corporate control of the government, privacy, food for people! I don't think anyone said a word for the whole hour he spoke.
I couldn't vote, but I did wear a pin to school the next day. It made me feel a little bit like I did when I discovered Howard Dean. Empowered.
Nader gets no love on this board, and that's okay. I understand where you're all coming from. And some people have said that Dean will spoil this election. Maybe. I can't say. I'm writing him in on March 2nd, though.
The general is a long way away, I don't know what I'm going to do. None od the remaining candidates have earned my vote. But, there's a long history in my family of people throwing their vote away--my dad voted for Harry Browne in 2000.