It's not just that. You can get an idea of the traffic to the site if you watch for a while. When that information might be commercially sensitive then it could

It's not just that. You can get an idea of the traffic to the site if you watch for a while. When that information might be commercially sensitive then it could be a genuine issue. For example, nba.com has been averaging about 3 connections and 1021 idle workers while I've been watching it. That's perhaps less traffic than you might expect? I don't know, but if I were paying for ad space I might be interested.