Mystery solved.
"I'm not paranoid, the sock puppets are just out to get me."
To me (speaking as relative newcomer (uhuh!)), it's fairly obvious that there are only 3 people posting on this site: one RW neocon fear mongering Nut, one leftist liberal freedom-hating loonie and one retarded or seriously mental guy who just makes fun of everything and posts asinine and often cynical statements including many pictures and fake polls and such. A little confusing though is the fact that the latter seems to be able to use even many of the former two's accounts. But at least the first two guys are quite consistent on their POV within respective accounts. I admire that very much!
Another thing befuddling me is where to put the Cenk-, Dave- and Ana-characters. Those appear to be the same as those people in the small video-feed (I'm not sure yet if that's cg or real; either way: well done, matrix-masters!), but they seem to be much more intelligent and coherent in written form, so my guess is that those are cooperative endeavors of the 3 guys writing all the other posts, the leftist guy obviously being some kind of editor in chief.