I am Kristofer Munsterhjelm and I approve of this wiki.
Apparently it's good form to have a user page even when there's not much on it. But I should have something. So how about a Github page? http://github.com/kristomu. It has voting-related linear optimization code on it. Also a voting simulator!
I have been posting on the election-methods mailing list since 2008. One of the first posts I wrote was about showing the tradeoff between representativity and utilitarian efficiency of multiwinner methods. A relevant graph can be found here: http://munsterhjelm.no/km/elections/multiwinner_tradeoffs/.