I thought it might be revealing to compare stats on the 5 most prolific topic starters on the list as of about an hour ago (Fri., 11PM EST). Sorry, I can't do ascii charts.
TOPICS STARTED RomanticLover - 24 davids - 12 shadowcat - 12 AbbieNormal - 5 FONDL - 5
REPLIES PER TOPIC STARTED FONDL - 34.4 AbbieNormal - 20.4 shadowcat - 15.8 davids - 7.8 RomanticLover - 2.8
PERCENTAGE OF REPLIES BY SELF davids - 40.0% RomanticLover - 30.9% FONDL - 17.4% AbbieNormal - 13.7% shadowcat - 8.9%
PERCENTAGE OF REPLIES BY SELF, DAVIDS OR PARODYMAN davids - 62.4% RomanticLover - 55.9% AbbieNormal - 27.4% FONDL - 24.4% shadowcat - 15.3%


Decided to take a look anyway. I limited the sample to threads started this year and to posters with 3 or more posts. In alphabetical order:
Poster # threads avg replies self replies
AbbieNormal 8 11.9 0 davids 35 3.6 37% FONDL 4 35.5 0 shadowcat 11 11.8 0 tropicalH2O 3 18.0 0
I was very stringent on what I called a "self reply" It had to be neither a clarification of a previous post (however re-statement of the question did not count as a clarification) or an answer to another poster in any way. Only one poster had any of these. Of the 126 answers that poster had to threads he started, 47 of them met that criteria. That same poster also had 10 threads where nobody had replied but himself. I also found it interesting that RL didn't make the cut in this period, because he only started one thread.