There are no stupid questions - or are there?
Short question: Is it okay to ask stupid question on Stack Overflow?
Long question: From time to time, people ask questions on SO that they should not have to ask there. We all make mistakes, but some questions already include their answers. And the question vaporizes itself while being writing — often. That's what I like to call a stupid question.
At the moment that I ask a question, the answer may jump into my face, and then everything is clear. For example:
If I write "xyz\n" on the command line, why does the next line start on a new line, not at the end of my line?
A big sorry to the original poster, but here is an example (again, sorry for quoting you).
In my very personal opinion, it is much more productive to tell those people to think twice and check the conditions that lead to the given errors, instead of just posting (and/or copy/pasting) an error message.
The people asking those questions will never become real programmers if they learn to just ask questions on SO! And SO will fade away in information overload, like all other sites.
On a personal side-node: I was really happy about SO, because it is so much better than any Q&A sites or forums on the WWW. It has (had?) so much more quality.