Are you a last minute hotel booker or one who plans out trips months in advance? If you are a business traveller, chances are that you are the former. If you aren’t, then you are just the guy who could do with this article. Come to think of it, even if you are a business traveller who lives out of a suitcase, it would pay to keep these hotel search engines bookmarked because it could give you some room near your bottom-line.