Thanks Robert,

That is exactly the problem I'm having..... do you make your tweets public for everyone in the world to read ?? or do you make it private so only the people you've approved are able to keep up with you ??  Then there is the issue of  your competition  using your tweets to further their business.  I just haven't quite figured out how to use it or any other social marketing( facebook, linkedin, ect) to help me.  

I wasn't asking  for anyones specific marketing plan, just some idea's on how others have made this a good marketing tool.