How to publicly chat to someone using the @username via Twitter.
To reference someone when you tweet, you use the @ tag e.g. @mrwebmarketing to make sure they see your tweet. This video explains why and how to use it.
Brad Hauck (MrWebMarketing) is an Author, Conference Speaker and Consultant. Over the past 5 yrs he's brought in over 50 million visitors to his & clients sites.