Agreed. I don't know about the particular %, but sure, you are always going to have some users more active than others. It is certainly true for Hacker News.

Agreed. I don't know about the particular %, but sure, you are always going to have some users more active than others. It is certainly true for Hacker News. I'm sure a significant % of people using this site haven't even bothered to register. Perhaps pg could enlighten us as to an estimate of the actual %?