Participating on the discussion boards is free advertising. Any of those who deal with advertising, realizes that advertising of any business can be costly. With that being said, why not utilize avenues of free advertising?
I don't spend any real length of time participating on forums. However, I do check in from time to time and engage, when I have something to add. This allows the lurkers and participates to get a glimpse of my personality, how I conduct myself/business and take note of my sense of humor at times. The results can and eventually will result in time spent together, if the gentlemen appreciates how a companion conducts herself and her business.