Extracting the karma/reputation system into its own pluggable app

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How hard would it be to extract the karma/reputation system into its own pluggable app? As you've probably figured out by now, I'm looking at integrating askbot into a larger site, and I'd like the rest of the site to be able to use the reputation system as well. How hard would it be to convert to using something like django-reputation? Or would it be easier to extract the current implementation into its own (new) app?

As always, I'd be willing to help out with this once I gain enough knowledge of the system.