Twitter is another tool to get in the middle of all those conversations that are taking place globally; another way of taking your message specifically to your segmented audience of readers, writers, and buyers who will help to pass along your message.  Right now many debates are taking place on where Twitter belongs within business; that answer is easy.  It is another tool that helps businesses join the conversation about their services/products; another touch point to keep top of mind with bloggers, readers, buyers, etc.  Segmentation is going to be critical - making sure your topic is important to your audience.  Now with Twitter become today's news on CNN, talk television shows, and hollywood, growth of this tool is inevitable.  Marketers will need to fold this tool, along with a strategic plan, into their overall marketing plan.