1. Yes.
2. My fave definition, as it doesn't specify a subject or specialization: "Geeks are intelligent, enthusiastic people full of curiosity and passion." -- Ellen Spertus, Winner of The 2001 Sexiest Geek Alive contest.
3. Pro: I'm in low supply AND high demand with male geeks.

Con: Watching people I trained being promoted over me at work, because management thinks as soon as they promote me, I can find a job somewhere else because I'm so competent. I like it here!