Why does it take a couple of hours? Well, software ain't perfect -- and ours converts an extremely complex encoding used for typesetting into valid XML, then creates the online HTML version from that. We don't release it automatically. Instead, it gets a once-over from LII XML wizard Dave Shetland before it goes out. The error rate is low -- but we find that when the software blows up, it tends to do so dramatically, so a spot-check is necessary to ensure that our audience gets what it needs accurately and as soon as possible.