What you will notice on the front page of this week's Business Journal is something out of the ordinary – a hash tag. #WOMEN140 is a summation of specific business concept. Through our research, we've found that women are using Twitter in a more efficient way for business than their male counterparts. What can we learn about business from the way women tweet? Is there business value in 140 characters or less? We gathered ten women — educators, VCs, CEOs, founders, public relations specialists,…