I haven’t played too extensively with the site yet, but The Bidding Traveler looks to be a very useful tool for novice and intermediate Priceline users. It both helps lay out a bidding strategy and automates that strategy in order to save on effort.
It’s certainly simpler one-stop shopping than using a site like Biddingfortravel.com or Betterbidding.com, searching through recent bids to determine what folks are generally winning hotels for and identifying which ones are similar to your circumstances (e.g. weekday versus weekend). And it takes care of the work of identifying your ‘bidding strategy’, figuring out which zones to use as free re-bids in order to order to bids from lowest to eventual highest that you make. (Priceline bidding permutations are explained here.)
Ultimately, the site just sets up your bidding for you. It develops the bidding strategy based on your preferences, and then executes for you. The bidding done by your computer, not by the site itself.
Now, this site isn’t for true novices who aren’t familiar with what Priceline is all about (if that describes you, see this). But it’s a useful site for simplifying things for sure.