A Manchester band are setting up a gig. Using Off Axis they identify a band in Glasgow of a similar genre, offering to host them.
The gig allows the Glasgow band the opportunity to broaden their fan base. The other band hosts it, getting 'credits' for doing so.
Using the credits, the Manchester band can choose to play a show wherever they like. They choose Brighton, and the process repeats.
The Manchester band host more gigs, gain more credits and travel to new places. They have grown new fanbases all over the UK.