#2 - July 26, 2009, 9:33 p.m.
The quickest way to report this player's activities to our department, Absolution, is indeed via the Report Spam feature. In addition to alerting our in-game staff to the repetitious text, this feature will allow you to ignore all characters on the player's account for the duration of your login session.
Given your experiences, though, it may provide more advantageous to simply ignore the player outright (using the /ignore command) and then submit an in-game petition reporting the obscene images which this spamming creates. This requires a bit more effort on your part, but will allow to us to fully address all aspects of this player's contributions within the Trade Channel. :)