I don't think Mr Wallace was having a bad day -- I think he was just trying to be helpful and showing his concern that other researchers make the most of their time and effort, whether it is in asking questions or answering them. An occasional "roll call" for the entire list may be useful, but wouldn't it be more productive if we appointed an "editor" to collect inquiries, try to make sure that they had as much detail as possible, and combined them into one "shopping list" -- or maybe two or three, by different time periods? There are times when I'd volunteer to do that myself, although this is not the season for it in my own life. As it is, I'm just sorry I have to delete so many unread messages when they flood my inbox all at once. I don't think I'm the only one, who does that.