Travel is still smoking hot (at the fire sales, that is)

Travel may be down in this economy, but there's one area where business is booming: discount booking sites. With travel providers desperate to unload unused rooms and tickets, it seems like the only sectors of the travel industry that are exploding are the ones previously seen as a last resort by the industry.

Priceline.com reported that bookings through its site, which offers steep discounts on hotel rooms and other travel products, are at their best levels in nine years. Hotwire.com, which is owned by Expedia, reports a similar boost in revenue. The Hotwire Group's sales over 12 months have exceeded $250 million for the first time, and reps told WalletPop that compared to last year, hotel bookings in the biggest markets (meaning the most popular travelers' cities) are up between 20% and 30%.