Sustainability seems to be the most favourable vehicle for corporate sustainability communication, which needs to convey the performance and even attitudes of corporate on the road to sustainable business in a credible way. Despite considerable progress companies have made for improving the credibility of sustainablity reports since the last few years, there is evidence of a deficiency regarding credibility in terms of what they say in reports and what they do in reality (e.g. Shell in Nigeria & Coca-Cola in India in comparision with their sustainability reports)...