Now I need some feedback in a few areas...
What should I call the add-on?
What kind of things would you like people to spend their digital currency on?
Currently it has: change username, purchase user upgrade from digital funds, buy another member a gift, give another member credits. Things I will be adding: choose a username colour, other custom username styling options
What kind of things will earn them currency (if enabled)?
For this I was thinking along the lines of every 50 posts you get x credits, every 10 likes you get x credits etc etc
This add-on will make you money while increasing activity... how much would you pay?
I generally like to keep my add-ons fairly cheap and was looking around the $50 mark for this.
I have seen other systems like this have users create their own shops etc... would that be what you want?
Here are some restricted screens to show a bit of what it looks like. It is already a fairly nice system but it might be hard to tell from these screenshots. A lot of my design decisions come straight from deviantarts system.
I will show it more when I have re-factored out the stuff I can't show at the moment.