Here's a couple of links about this German complimentary private currency; http://en.wikipedia.org/wiki/Chiemgauer & www.chiemgauer.info (only in German) . The Chiemgauer is pegged against the Euro at a ratio of 1:1. Aidan.
Such complementary currency systems, most of them based on Gesell's ideas, are "at work" in many regions and countries, by the way. Some seem to work (like the Chiemgauer), others were stopped due to a lack of participants (like the Justus in Gießen). Here is an example from the UK: http://news.bbc.co.uk/2/hi/uk_news/england/devon/6692755.stm Christian