I think PvK wins the contest.
PvK has a post from 31 July 2000.
This was the first thread I could get my hands on.
http://www.shrapnelgames.com/cgi-bin...&f=23&t=000001
And he just posted yesterday, so that makes him active. Wierd thing, though ... he posted 31 July 2000, and 28 Aug 2000, but then didn't post again until March 2001.
FWIW, my earliest post (also a topic) is from 19 Sept 2000.
http://www.shrapnelgames.com/cgi-bin...3&t=000062&p=2
As long as we're bragging about silly things: I've posted in 200 different topics. Who can beat that?