The easiest to find those asking the questions, is to look at http://area51.stackexchange.com/proposals/4260/database-administrators. You can easily find those asking many questions between those who give many answers.
On the other side on SO I have 20 questions 121 answers.
Here I have 48 answers to 37 questions.
And the pattern of my questions is changing, I'm no more trying to think up interesting questions.
Most questions I'm posing now, are directly influenced by some more or less urgent problem at work or questions from coworker I just pass throw.
I found that I often get answers in a short very time. But I'm a database developer, I don't have to teach people, I just can focus on solving problems.
I guess it is better, when I try to optimize my questions with respect to search engines.
In fact in some cases it is easier for me, to find my questions by google, than to find file on my local machine.
BTW I think our problem is the low number of questions, what would it help to encourage experts to write more answers.
I you would wish me more problems to solve at work, that would have better influence on the stats.( LOL )