I realize as a beta, any question is often seen as a good question. But I fear that too many overly subjective questions will just do far more harm than good.
When new users see that these types of question are accepted and open (and all at the top of the list on the front page):
They feel justified in posting their own, broad, opinion-based, vague, subjective question.
Since this is a beta site, there doesn't appear to be a large pool of users capable of voting to close questions. So, moderators may need to be a tad more aggressive in some cases and close questions a bit faster.
I'm not implying that my opinion of what is openly vague is always accurate. I merely see 3 down votes on something, and only 1 close vote. In many cases, if these types of questions are down voted I can only assume it's because they are poor questions (which I agree with). After all it's not possible to have a "lack of effort" based on the context of the questions.
Anyway.... just a suggestion.