Local Exchange Trading Systems (LETS)

International Journal of Community Currency Research (IJCCR)]
This link will keep you reading abut LETS for days:
A specific set of links listed by Tony Budak
History and background - alternative currencies:

Complementary Currency Resource Center (CCRC)

Conference Proceedings

Finding FOCUS - Short of time, then research these selected time trading projects
If you have no time to research, just click the links below:
See this Video
An Example of a Network of TimeBanks