Two Plus Two’s Policy on End User Advertising – Effective January 2008
Posts made with the intent of the promotion of any goods or services, including other websites, will be deemed spam and will not be allowed.
Users are not permitted to promote for-profit special interests, services or products within forum threads or posts (this may include some not for profit special interests as well, Two plus Two’s moderators can evaluate these scenarios on a case by case basis). Threads or posts that do not follow this policy will be considered SPAM by Two Plus Two, subject to deletion, and the offending user may be penalized with an infraction or banning at the forum moderator’s discretion.
Users are not permitted to promote for-profit special interests, services or products within the users location, title or username (this may include some not for profit special interests as well, Two plus Two’s moderators can evaluate these scenarios on a case by case basis). Users who modify their locations, title, or username so they do not follow this policy may be penalized with an infraction or banning at the forum moderator’s discretion. This rule also forbids statements such as “blogging”, “coaching” or “PM for rakeback”.
Special branded usernames are permitted only when pre-approved by a moderator for posting exclusively within commercial topic forums such as the Software, Rakeback or Coaching forums. These branded usernames are permitted to use an avatar that contains the brand logo without the url – but they are not permitted to post outside of their respective forums.
http://www.twoplustwo.com/terms.php