That's a totally valid point, gbelote. Nevertheless, there will always be questions where you don't know you to frame a question - even after having searched around for a while.

E.g.: if you are new to Linux and X doesn't start - how could you ask if you are new to the whole field? A bit of guidance by an expert could help in 5min. And then, sometimes it is just like the xkcd strip at http://www.twotoreal.com/site/about/

I view it as a last resort - after SO/Quora/etc. could not help.