Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Do you know of any online monetary systems?
Edit: I discovered Bitcoin a few months after I posted this answer. I would strongly recommend anyone interested in this question to review it, particularly the myths page that dispels much of the FUD. Original answer: Although it is not online, as a concept the Totnes Pound may be of interest to you. I live quite close to this village (in the UK) and the system it promotes does work well.  According to the   Transition Town Totnes website this   means that it is "a community in a   process of imagining and creating a   future that addresses the twin   challenges of diminishing oil and gas   supplies and climate change , and   creates the kind of community that we   would all want to be part of." If you are looking for a starting place to introduce a new type of currency, perhaps in response to over-dependence on oil and global trade, then reading about the Transition Towns initiative could provide you with the answers you're looking for.