2 schools of thought on this:
1) Staging an empty home lets buys visualize life in the home, and
2) An empty home appears larger and lets buyers imagine their stuff in there better.
I would contend that in this market, more important than staging is price. You NEED to be priced correctly. Otherwise you will become frustrated and ride the market down with price reductions. If you need to sell, price it accordingly. If you just want to see what kind of offers you can get, now may not be the best time for that approach.
I am listing a vacant home in Norfolk later today and we all agreed that getting the price right on, and coming in slightly ahead of the rest of the market, was a better strategy than trying to make the home look "cozy and lived in".
Don't worry too much about staging vs. non-staging an empty home in my opinion, just get the price right. Hope that help! Good luck...