if a on-line game is created, somenthing to consider:
ok, so there's let's say 5 factions, and they all use diffrent forms of money:
the "legitimate USA uses greenbacks.
the "illegitimate USA uses bluebacks.
the wastelanders use ring pulls.
the NCR uses "money".
most villages use caps.
some villages use village-specigic "script" (these being mining towns, and the script being "Mine Name" script).

Ok, so initially, moneies have a 1:1 trade ratio; A Wannamingo Script is worth a Kokoweef Script is worth a Morningstar Script is worth a ring pull is worth a money is worth a blueback ir worth a greenback is worth a cap. (Well, maybe 1:25 for caps and 1:100 for ring pulls )

But as time goes on, moneis from one faction get into the hands of another, until they loose value; people fleeing the illegitiame USA to the legitimate USA try to sell their bluebacks as fast as possible, the US's markets get flooded, and bluebacks loose value in the LUSA. The contrarywise senario effects the IUSA, where greenbacks have flooed THEIR market, causing lose of value; but the greenabcks come via wastelanders, who typically use ring pulls, so ringpulls have ALSO lost value in LUSA banks.

the algorythim needed to control the exchange rate is beyond my knowlege or understanding, BUT what the master platrofming computer (the one that my computer talks to as I play in my skivvies at hoem or uniform at work) watchees is the amount of monies in public holding (banks and governemnt), and not in private holdings (players and groupss).

Example: I am an IUSA affiliated advanturer. After a long, hard campagin of terrrorizing the wates with a half-dozen of my buddies, i have:

Greenbacks: 22,000
Bluebacks: 12,000 ('casue i wouldn't normally attack a fellow IUSA'er)
Ring pulls: 22.1 million
Money (NCR): 12.1 million
Caps: 8 million
Wannamingo Script: 15,000
Kokoweef Script: 2,123
Morningstar Script: 1,915
Ghecko/Vault City Ores: 14.

the exchange rates against bluebacks is:
Greenbacks: 1:0.35
Bluebacks: 1:1 (duh!)
Ring pulls: 1:118
Money (NCR): 1:0.21
Caps: 1:0.25
Wannamingo Script: 1:0.22
Kokoweef Script: 1:0.22
Morningstar Script: 1:0.20
Ghecko/Vault City Ores: 1:0.85

BUT, the exchange rate for ring pulls to NCR monies in the NCR is 1:0.93, becasue the NCR is artificially inftlating the value of ring pulls to encourage wastelanders to spend money in Shady Sands.

I 'could' use my fake NCR papers (or maybe theyr'e real, i just lied to get them) to got to the NCR, exchange my ring pulls for monies, and take THOSE back to IUSA to exchange for bluebacks. Or i could justt hold those (for now) and spend them on the wastes (1:1 ratio there) later. Learn a habit, it’s not wise to upset a mutie.
But sir, nobody worries about upsetting a Human.
That’s ‘cause Humans don’t eat people when they get irritable. Mutie’s are known to do that.

Green Haired and PProud!!!!