Clear out your bookmarks. You're going to need the space for 50 offerings that are indispensable to navigating, enjoying yourself, shopping or just killing time on the Web.
Which travel site should you turn to when booking plane tickets: a) Travelocity, b) Expedia or c) Orbitz? The answer is d) All of the above — by usingKayak, a meta-search site for travelers. Kayak scours more than 100 search engines in order to find the lowest possible price. One tip: before you buy from any travel site, always checkSouthwest. It's the one major airline that refuses to play ball with the ticketing sites, so sometimes they have the best deal and even Kayak doesn't know about it.