Well, as I post this, each options has one vote

I voted for the wiki like system. In my mind, it is like the website:
Oblivion:Oblivion - UESPWiki AM I right? I find this kind of sites great to use and very easy to find the proper information. I find a blogging system rather less attractive. But I don't get the whole system of blogging anyways. In my mind, it is like a Diarry wich everyone can read. It has zero intrest to me. The idea to write everything down, all of your joys and gripes doesn't have a great deal of value to me. I hear enough angry and sad people every day at work.
But there are other people who like blogs appearantly, they are probably from Jupiter
Ow, and above all, keep in some kind of a forum where people can interact with eachother. This is also some kind of virtual club of equal minded people, a social occasion.