Hmmm. Klazo posts to complain about people failing to acknowledge responses and then writes "I won't respond". Am I missing something here?
For what it's worth though, I'll mention that I've found the likelihood of a response to often be inversely proportional to the amount of effort that I've put into it.
For example, if I quickly google for an answer to a problem, I'm quite likely to receive profuse thanks.
However if I spend a couple of hours researching travel options for someone or, as I have done, drive to the other side of the county in the early hours of the morning to find out an answer, the chances of any type of response are minimal. (An American ABer, to whom I provided a guided tour of Paris for a day, didn't exactly go overboard with his thanks either!)