Experts say the key message that should be echoed at the annual Meetings Africa conference in Johannesburg, South Africa is that continent is open and desirable for business and tourism. A report by the UN Conference on Trade and Development shows that four out of 10 tourists in Africa come from the continent itself. Evidence of this growth can also be seen in airlines announcing new routes across the continent. More from Jan van der Putten, Vice President for Operations at Hospitality Company Hilton's  Africa & Indian Ocean region..