I am a voracious StackExchange user, always I have a technical question I go to StackOverflow, also every morning I like to come here to programmer to read some more advanced questions and opinions about design stuff and programmer challenges (as opposed to programming challenges). I noted, a long ago already, that we have a great number of negative voted question. I can understand the motives. 11 22
But why can't we raise up the quality of the Questions? Look at this chart I extracted from data.stackechange. It shows the ratio of down voted questions to total questions asked that year.

Despite its huge size, StackOverflow could, given the years control (and for some time, lower) the negative voted Questions. In Programmers in other-hand negative question have increased over the years (except in 2013-2014 period, where it appear to be controlled).
- What can we do to help with the questions quality?
- Are we already controlling better new posts in the review queue?