HOWTO sleep in an airport

The Budget Traveller's Guide to Sleeping in Airports is pretty much what it sounds like: user-contributed reviews of the sleeping "facilities" in the world's airports, bus-stations, train-stations and the like.

Always Have a Backup Plan: This is the most important tip for anyone who voluntarily sleeps in airports. Airport officials are not totally supportive of the airport sleeping idea. Although in 95% of the airports you won't be kicked out, you will be asked why you are there, why you are not in a hotel like normal people and they will ask for proof that you are flying out the next day. So BE PREPARED to answer those questions! They seem to not appreciate us using these massive wastes of space as our personal hotels -- go figure!?!

Link (Thanks, Smash!)