A message body search for the text string "activemeter" show four distinct message board "nyms" have included invisible web bug tracking images in Message board posts beginning on 10/20/2006.
Most interestingly these four nyms have used overlapping combinations of the "project" ID number in the web bug links. The project ID numbers are only available after password signin to the activemeter site. The four "nyms" are sharing passwords or are more likely a single individual person using "sock-puppetry".
For the record:
filbertoramon in msg 1932 uses PID 18849
rassler in msg 2047 uses PID 18849
filbertoramon in msg 2021 uses PID 7878
pittydafoo in msg 2394 uses PID 7878
rassler in msg 2047 uses PID 7878
pittydafoo in msg 2770 uses PID 24393
Stockfoo in msg 2875 uses PID 24393
Most importantly the blog "TrailerParkRave.com" uses activemeter code with PID 7878. TrailerParkRave is Judd Bagley's personal blog. The overlapping and duplicated PID numbers establish that filbertoramon, rassler, pittydafoo, and Stockfoo are all sockpuppets of a single password-shared corporate entity. http://126.96.36.199/search?q=cache:7I4vQKas9FMJ:www.trailerparkrave.com/?p=24+trailerparkrave\&hl=en&gl=us&ct=clnk&cd=2
In order to insert html code into message board text, rtf editing must be enabled. rtf editing is not on by default, and is generally clumsier and slower than the default text page. This is of interest because there may be other Bagley "nyms" that are posting, but have reframed from using the web-bug codes.
Searching for html strings in the message text shows only a few other OSTK posters use html editing. Some of these show posting histories in other issues, so may are likely simply accidental matches.