Thanks for the shout out. It seems that the original thread was deleted, so I'll re-explain my idea here. The capped overall karma is to remove the incentive to grind for reputation points. There is fundamentally no point to them, but there is clearly some psychological need driving us to want more of them. This should help with karma farmers.
The magazine specific reputation points is so that people can tell when a troll has entered their specific magazine. A troll would have high overall reputation but in your magazine it would be very low, which allows for them to be quickly identified and banned.
@RheingoldRiver I like your idea of a percent breakdown, but it wouldn't help magazines identify spammers. A spammer can create an unlimited number of magazines with legitimate sounding names and spread out their grinding among them. The percent breakdown would look normal unless someone really dug into it.
What I don't have a solution for is creating an incentive structure that discourages shills from creating alt accounts in order to gain more influence.