You could have simply asked something like, "What are peoples opinions on the job market?" > My conclusion, so far, is unless you've got strong connections it'

You could have simply asked something like, "What are peoples opinions on the job market?" > My conclusion, so far, is unless you've got strong connections it's hard right now to find a job. By including this take, you may have primed people to respond with a similar opinion. But actually I think it might be almost impossible to eliminate the bias. You're very likely to hear back from people who are job searching. And job searching is an inherently stressful activity that breeds a negative state of mind. So you're very likely to hear back from people who think the situation is bad.