Shoestring Travel and Backpackers Sites
CouchSurfing.com - Possibly the best way to stay... for free!
Hospitality Club - Possibly the best way to stay... for free!
Globalfreeloaders - Possibly the best way to stay... for free!
The Thorn Tree is the best place to read others' posts on travel experiences
Hostel World - All inclusive site for backpackers
Euro Trip - All inclusive site for backpackers going to Europe
American Youth Hostels - The big one, AYH, has gotten more expensive, and less hospitable in general
Hosteling International - Affiliated to AYH, so has the same problems
STA - The all-inclusive site everyone knows about. Surely one of the best.
National Wildlife Federation - Not affordable to go with them, but worth peeking at their itineraries for ideas
Worldwide Hostel Booking - Thanks Lonely Planet
Hostels.com - Easy searches of IYH and independent hostels worldwide
Boots 'n' All - All inclusive site for backpackers
Hostelz.com - Reviews and pics of hostels worldwide
Budget Travel - Amazingly though site for links. NPR recommended.
RTW FAQ's - Covers most areas
Travel-Library - One of these umbrella sites that is jam-packed full of links
Hostel.ws - Worldwide hostel site. Not sure where ws is...
Onebag.com - How to travel anywhere for any length of time with only one carry-on size bag