Don't worry. You don't have to post. Only if you want to.
What I have found is this site called the Political Compass. It is a questionnaire that assesses how right or left your political beliefs are, both in terms economics and social beliefs. All you have to do is post the numbers you get, if you so wish.
I'm mainly interested because I wonder if people here will be more left wing then standard, socially at least, because we are in a minority which tends to make us more open minded.
Again, if you aren't comfortable with posting you don't have to. Just remember this is only an online questionnaire and it only guesses your political alignment. It won't always be accurate.
If you are interested, I got:
Economic Left/Right: -6.12
Social Libertarian/Authoritarian: -5.28