In some post on careers.SE Joel pointed out (edit: See @Atul's answer), that actual rep is not so much what matters. What you should do, is to add links to answers (or questions) that you think really show your knowledge and skill.
In fact, rep has two major problems:
- it follows some weird group dynamics. There's a lot of uneven amplification effects, that distort it even as a measure for the "absolute" value of an answer.
- using it as a measure for a whole person basically dumbs it down to measuring something very individual and complex on a linear scale.
However your profile as a whole tells a story. One can see, whether you're a specialist, or a generalist. One can quickly see your top answers and questions, to see what you master and what intrigues you. Your style of writing reflects on your personality and so on.
I guess the point where you should use your SE profile as part of your CV is the point when you like the story it tells.