Most forums tend to have a shop where you can purchase stuff outside of the exchange. Does this site have one, as I do not see it. If not, you should add one. There's several things you could add which would allow the community to use it. Such as, a stickied thread for like $2,000 or something along those lines. $2,000 to post a thread in the advertisement section, some money for a colored username or something along those lines. Stuff like this will give the currency a whole lot more worth, and would cause more people to use the exchange system, as well as make people post more for money. Currently you just have paid sections, and if people are putting everything they have into their business, start up, site, etc. they won't be able to spare the money for certain stuff, and this is what the forum currency would be used for.