It should be noted when using that link you do not have the opportunity to take advantage of higher dollar bonus money offers. That link is great if you don't want to be bothered with applying for a credit card (up to $70 or $80 of bonus money for airfares) or various subscriptions.
I host a Yahoo Club to discuss bidding for airfares and hotels on Priceline.com and Expedia's Hotel Price Matcher at
http://clubs.yahoo.com/clubs/pricelinedeals