I've never had much luck with this approach. It sucks to get through the interview process and find out that you're asking for $XX,000 more than they are willing to pay for the position. I now prefer to state up-front how much I want, rather than wasting time getting an offer for ten+ thousand less than I want and only have HR willing to come up a few grand.

I'm sure many people have applied this technique to great success, but I have strong doubts that it's universal. Maybe it's because I never bring much to the table, or that I live in an area where "market" salaries are not affordable for companies.