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The first experiment of a subjective proposal - programmers - was created 11 days ago and has been in public beta for 4 days so far.
As a private beta user I followed the website since day 1, reading most questions (even though I didn't actively participate much), and so far my impression is very good: programmers is a wonderful website to read when you have some time to kill. It's like reading a magazine.
In my opinion, reading Worst coding standard you've ever had to follow is much more fun than reading How can I sort an SQLite query ignoring articles (“the”, “a”, etc.), and thus it's no surprise that most of the stackoverflow most popular questions actually belong on programmers, as they are subjective/argumentative (but have been grand-fathered).
I believe that the very nature of subjective answers make them more interesting. Of course there is a (big) place for non-subjective websites where you can get help or help with a specific problem, but I think there should be a (big) place for subjective websites too.
It's early to say (this is meant to be an ongoing discussion that will probably last months), but so far programmers seems to be one of the more successful - if not the most successful - proposals ever created. It has 5k views a day, and the only beta website with more views is gaming.
So, what do you say? Should subjective proposals be allowed? Can they be successful?