If Twitter goes beyond 140 characters, brands will follow with more customer service | Adweek | consumer psychology | Scoop.it
From www.adweek.com - October 6, 2015 12:10 AM

"If you enjoy the back-and-forth Twitter exchanges between brands like Target or Delta and their querying customers, you'll like what could be coming soon.  Re/code reported today that Twitter is planning to increase the maximum length of tweets ..."