My experience with stackoverflow boil down to these two situations:
I ask a question, write my little heart out to provide context, to provide things I have tried already and to state my problem, because I don't have trivial little coding problems I can solve with google (yes, that was arrogant, I am aware of this.). After I have posted such a question, I usually get like 3-4 1 line answers and then the question goes dead, because apparently, the answer to such a question is more complicated.
On the other hand, if I answer a question, I usually look and poke around a bit in order to provide a good, complete answer to an interesting question. Once I have posted such a question after like 10 minutes, there are like 3-4 one-line-answers posted already, upvoted already and my answer (which usually is more accurate and all) is just ignored and stays somewhere in the middle.
Joining these two experiences together, I have moved on to use groups and certain IRC-channels, as these are more helpful for nontrivial questions.