@dalehileman,
Quote:I understand a2k boasts over 100k participants
Boasts? How dare you damn Region Philbus with faint praise. Boasts indeed.
His last count was 230,580 members at an orbital velocity of 2,000 per month (or 13 if you are unlucky enought to be superstitious and subtract once only posts by Indian school children in the introductions section of the romance that is A2K).
A sufficient statistic for the mean number of posters (with more than 5 posts per month here) is 113 with a variance that only god could create with a skewness and kurtosis that is devilishly predictable.