If you have some spare room, some spare bed, some place on the floor or a free couch you can provide to one ore more traveling hackers, it should be shown on this page. You can easily add your free couchsurfing place by adding an entry to your userpage. If you have multiple distinct places you can also add multiple entries there. Just go to your userpage, click on edit, scroll down to the couchsurfing section and click Add another.
List of provided couchsurfing places
List of Couchsurfing Places