Backpackers Planet http://www.backpackers-planet.com/

Free & transparent information platform with Hostels, Guest Houses, B'nBreakfasts etc... all around the world. Read more if you want to know why they exist.

Cheap Flights www.cheapflight.com

When you gotta' go... u know what to do >>

Couch Surfing Project http://www.couchsurfing.org/

& if you don't know what this is...well........?
gomio.com http://www.gomio.com

Here u may also book your bed. Furthermore they have a very well made event calendar of whats on everywhere!!
Guardian Travel http://www.guardian.co.uk/travel

U will have to look around a bit...... but u will find great info on this site.... this is one from ... them about the spy map
Spotted by Locals http://www.spottedbylocals.com/

Thats a collection of lovely & far reaching Cityblogs by locals in 20 European cities... easy to use & hots the spot.
TEFL Uncovered http://www.onlinetefl.com/e-book/tefl-uncovered-low.pdf?source=et-auto-ebook

a free E-book that usually retails at ?? 34.99 - a great way to earn money & keep on travelling.

USE-IT Europe http://www.use-it.be/

This is an alternative to what Spy Maps is... here covering many northern European cities...Brussels-Antwerp-Rotterdam... etc, etc...