 Professor Waleh Shoyinka says if President Mohamed Abu-Hari has a problem with the micro-blogging and social networking service Twitter, then he should sort it out privately, reacting on Friday to the ban placed on Twitter by the federal government. The Nobel laureate said the move is a gesture that's unbecoming of a democratically elected president. Shoyinka said the Twitter ban in Nigeria has a technical issue that Nigerians should be able to work their way around. He added that the field of expression remains wide open and free of dictatorship.