© 2015, The Author(s). Nowadays there is a huge volume of financial information available on the web. There is also considerable debate about the impact, if any, that this information has on share prices and overall market sentiment. Fundamental and technical analysts believe that there is some value in financial information and that it can be exploited for predictive purposes. This article provides a commentary on various studies that involved the analysis of financial content for various goals using various methods. This article includes a discussion of their main findings and recurrent themes and concludes with some possible future directions for research.