It appears that the Aquamark3 forum database has been compromised. Today, I suddenly received three emails containing worms to a one-time e-mail address created four years ago only for the purpose of being able to search on the Aquamark3 forums. Since this email address never had been used for posting anything, it's rather obvious that they got it from the Aquamark3 forum database, which must now be presumed compromised.
Unfortunately, the current owner of aquamark3.com doesn't appear to be the same as the original owner (possibly a domain squatter who took it over after it expired), so I can't contact the owners to let them know, or hear what happened.