RECOMMENDED I have had lots of luck with Agoda.com, especially in Asia. Sign up with them and get member points for your hotel stays which turn into discounts off of future bookings. They encourage user reviews which remain very current (like Trip Advisor but IMHO cheaper prices and much easier to get right to booking). Plus good neighborhood maps to see where your hotel is or what other hotels are nearby. I like their customer service as well.
For the budget-minded among you, hostels are a great value. Not all hostels mean dorm beds only, some have doubles and triples or even single rooms. Check out Hostel Booker for some pretty reliable deals. The listings show good information and they gather ratings from clients who have stayed at each of the properties. You end up with a percentage ranking which is based on the composite score of six categories: Character, Security, Location, Staff, Fun, and Cleanliness.
Buying plane tickets is like playing the market sometimes. You never know when that “buy” price is going to show up. Use fare tracker sites such as Airfare Watchdog or even Yapta, which will help you get a refund from the airline if a ticket price goes down soon after you book.
Choose your seat wisely. Is this seat too close to the restroom? Is there an electrical box blocking my leg room? Check with TripAdvisor’s Seat Guru (it’s free).
Not sure where you want to go, just looking for the cheapest options? Try out Kayak.com’s Explore option which shows the prices of every place from your home or chosen airport.