If you are a travel enthusiast or lover, than its a good source to use. I just came to know that there is a free shelter you can get from the website called couchsurfing, They started in the year 2004. If you really want to spend some time at free of cost, you can use this social website to get the address and stay with the locals and meet the new people.
Its a global community of 14 million people in more than 200,000 cities who share their life, their world, their journey. Couchsurfing connects travelers with a global network of people willing to share in profound and meaningful ways, making travel a truly social experience. Till now they had over 555,000 events.