TripStalker. Download the free program, register and you can then set up continuous running searches for flights, hotels and car hire. You can also specify your target price, and delivery mechanism, including email, SMS or desktop pop-up. I’m generally a little wary of these ‘agent’ applications since in my experience they rarely do as well as a simple, blunt human powered search, but hey, I’m willing to be convinced otherwise. Worth a look (although it’s a shame they’ve gone the .NET route).
TripStalker is an automated software application that takes your specific travel criteria and continuously checks for a price that meets or beats your ‘notify’ price in order to save you time and money. We are not a travel agency; our service searches or stalks various travel partners for the best price to meet your exact travel criteria…while other travel programs search a “moment-in-time” price which require you to repeatedly keep checking for the best fare. We do the work for you, saving you time and money — TripStalker repeats the search until the price takes a dip, then alerts you