I'm not a part of Tamatalk so I am not familiar with their Karma system.
There are some more things I can do with the Karma system here but I am hesitant to install them as I don't want folks to obsess over Karma (something I have seen happen on a Final Fantasy XI board I frequent). Karma systems can make or break a community, so for now I have a very light version of a Karma system installed here.
I may or may not add install more to do with the Karma system in the future.. or I may just get rid of it all together if it becomes a nuisance
Depends what happens. Only time will tell =)