Duke dollars (as implemented in the Jive forum; you can see it at
http://forum.java.sun.com ) or points (as implemented in the
http://www.codeguru.com forums)
Obviously administering dollars is a PITA (and there was a lot of cheating when using dollars - for instance, creating empty threads and creating empty identities just for getting the initial 25 dollars), but leave it to the administrators of the forums...
There are a lot of business rules related to duke dollars (for instance, you receive 25 duke dollars when registering, you can assign 5 dollars to a topic, there are no negative amounts of dollars, you can remove dollars from a topic if no one answers, you receive 5 dollars just for logging in the previous month etc.)
[originally posted on jforum.net by Anonymous]