It's not just selling on Ebay which this sort of thing happens, I have over the years come to the conclusion that their is a certain number of people do this because they just wants reassurance of that their is some one running the listing or web site and the question is sort of irrelavent they have to find something to ask about and with Ebay it's about postage. I think it's sort of indicative of remote selling.<p>
As a after thought, and reading Lynn post below...reminded me that I have often been complemented for responding quickly to a email..
which I know ever one here will also do as a matter of course.. but I bet you where are a lot of businesses who trade on the net that do not respond either slow or not at all!,