I know this has been mentioned before, but some kind of response from newbies asking for advice would be a good thing. I think it's happening more and more, and it makes me, and I'm guessing many others less inclined to help. A 'thank you' is always welcome, is it not?
The Internet has created a culture where all content is free, yours by right and therefore has no value.
If you feel it is your right to post a question and get an instant answer, or grizzle when it doesn't it appear, why should you feel a need to thank when they merely give you something to which you feel you're entitled?
In other words, I agree completely, BBB, but you may be fighting a losing battle: the offenders drop in, get the information they want, and foxtrot oscar in short order.