Rick, what you say has merit. As a computer guy, I check email multiple times a day, not counting the hours I have it open. yet, weird to me, there are many folks who check their emails once or twice a week!
That said, if someone asks for pictures, or wins an item on ebay, I would think they would check within a day or so?
I also hear many buyers say they ask for extra pictures or of odd spots, so that they can see it. I personally have trouble with this, I usually take decent pictures and when folks ask for something 'different', well, I usually reply back and send them some extra pictures I didn't include in the auction, but I seldom take those special shots. As Geo said above, too many people ask for pictures and you never hear from them. I have found that few people who ask lots of questions end of buying