Skiff is a Couchsurfer and founder of GigSwap.org, an international network for travelling artists & musicians.
CS GigSwapping group
GigSwap.org

GigSwap.org came to life in 2006 and is about a global 'gig exchange', through a bond among musicans helping eachother to get their show on the road... 

It is an on line community with members worldwide who's main goal it is to help you, as a musician, venue or promotor, to make international contacts, to exchange live concerts and share your local information, needed to find bunks f.i., to organise or join a (non profit) event, or to even set up tour projects together. 

For that we work through a group on CouchSurfing.org, named 'Gigswapping'.
You can find our group here: 
http://www.couchsurfing.org/group.html?gid=7334 .
The working principle behind the concepts' effectiveness is not as much based on marketing, but on trust and reciprocity, much in the same spirit as couchsurfing.