A bit late, though better than nothing at all, my compilation (with special thanks going to metatron for the list).
aelf - Marxian, looking for sign of oppression anywhere
Ajidica - Intellectualist, political stances are essentially akin to fashion statements.
AL_DA_GREAT - Paleoconservative, radical decentralist
amadeus - Rothbardian
Angst - Post-Modern left-winger. Very interested in culture.
Antilogic - Old Left, FDR style
Azale - Anti-colonialist and reverse right-winger. Very left-wing overall.
azzaman - Dunno, seems moderate
BenitoChavez - dunno
Borachio - Open-minded, seems to be left-wing, though is always able to see from others minds
Camikaze - Similar to Borachio, though more rough and serious in his style
cardgame - dunno
carmen510 - Politically conservative, not sure about his economic or social viewpoints
Cheezy - Marxist-Leninist
classical_hero - Dominionist, believes in biblical literalism. Pro-Israel. Neocon.
Commodore - Third Way, holds a mix of libertarian and liberal viewpoints
Cutlass - Old Left, FDR style
cybrxkhan - Seems to be centrist, Asian oriented
Crezth - Believer in scientism, hates notions of irrationality. Auguste Comte would have been proud
Daird - Republican
domen - Poland Strong!
downtown - Centrist Democrat, similar to Bill Clinton
El_Machinae - Moderate
Flying Pig - Moderate, though socially left-wing
Goodfella - Very moderate, as I mentioned earlier
Graffito - dunno
Grisu - I know he is pro-immigration from the EU, overall open-minded. Dunno about the rest
Harv - dunno
hobbsyoyo - Supporter of government as patron of science, though not militantly so
Hygro - Left-Wing Capitalist
Innonimatu - Democratic Nationalist. Staunchly supports democracy and believes Westphalian nationalism and economic protectionism are the only roads to it.
Jehoshua - Paleoconservative, supporter of political Catholicism, distributist.
Joecoolyo - Another open-minded guy who hasn't made up his mind on everything
JollyRoger - Very left-wing, not much more than that
Kyriakos - Seems to be a follower of Mircea Eliade. Emphasises the irrational. Has Ancient Greek prejudices, tastes and biases that are not necessarily negative. Diametrically opposed to Crezth I'd say. Definitely a Paleoconservative.
Light Cleric - dunno
Lord of Elves - Old Left
MagisterCultuum - Geolibertarian
MilesGregarius - dunno
Mise - Social liberal, mix of libertarian and social democratic viewpoints. He could be editor of the economist!
Narz - Very moderate, is as likely to agree with me as with the stock left-wingers on CFC
nc-1701 - dunno
Oruc - Traditionalist, Paleoconservative.
Owen Glyndwr - ideological fashionista
Peck of Arabia - dunno
Phrossack - Moderate, staunchly opposed to overt biases. Anti-Polish.
Quackers - Liberal Nationalist. Hates non-Western cultures for being incompatible to Enlightenment values.
Rashiminos - CFC jester
Rickard Cribb - dunno
Silurian - Pro-Palestinian, though likeable nevertheless.
SmellinCoffee - Paleoconservative, though weirdly with some Chomskyite influences
Snorrius - Hates democracy, emphasises the irrational. I agree with him often.
taillesskangaru - Greenie.
Terxpahseyton - Admirer of the German political system
TheLastOne - Anti-Chavez.
Tolni - Bulgarian troublemaker
Traitorfish - Anarcho-Communist
Valka D'Ur - A mix of Positivism and Feminism. And cats
Winner - Pro-European. Pro-Israel. Pro-Enlightenment.
Wrymouth3 - dunno
Zack - typical college liberal