Rudi, I respectfully disagree with you about the responsibility towards those who only lurk and don't post at all. In such an internet community, I think there's a responsibility on the part of readers to offer their information, to "give something back". If a member doesn't make positive contributions, then there is no need to give them a second thought.
Of course, to take this but one step further, the same could be said about some posters who never share any useful information but simply amuse themselves with only posting nonsense. But that's a completely different discussion from this one.
------------------
Continental Airlines and bankruptcy: The third time will be the charm!