First off, Genesi are not sueing ANN.lu or Christian Kemp. From what I hear, it's the other way around - Kemp is suing Genesi for the money he was not paid by them and believes he's entitled to. Genesi seem to have responded by making legal threats.
So put down your pipebombs, put a hold on your order cancellations, stop swinging those baseball bats, and watch it play out. Like most real world confrontations, it probably has no good guy. Genesi are making threats to save their own skin and Kemp is using his site as a political weapon against Genesi. Don't be too quick to take sides - yet.