david4455 - it's extremely unlikely that it's Priceline that put this adware on your machine. A company like that knows better than to do somethign along those lines.
In fact, you're probably picked up some adware elsewhere, that is triggered by going to the Priceline website. Having said that, it's not very specific adware, as, whenever I've seen it, it tailors the pop-ups to the site you're visiting.
Still, I really wouldn't blame Priceline for this.
I use AdAware on my laptop, and it does the trick nicely.