THE INTERNAL CUSTOMER--MORE IMPORTANT THAN YOU MAY THINK> By Rama Beerfas May 1, 2009 (San Diego’s East County) --In our previous installment, we looked at customer service as your #1 marketing tool. (If you missed it, check it out at http://www.eastcountymagazine.org/?q=taxonomy/term/310.) This month, we focus on what exactly an internal customer is--nd why internal customers are just as important as your external customers to the success of your business.