Social Media Geographic Information (SMGI) can be defined as any piece or collection of multimedia data or information with explicit (i.e. coordinates) or implicit (i.e. place names or toponyms) geographic reference collected through the social networking web or mobile applications. Social data are acknowledged as a good of major value in the digital economy, and their potential for enhancing more traditional analytics is of the utmost importance. A big part of social data however also features spatial (and temporal) references, thus their integration with more traditional Authoritative Geographic Information (AGI) may enable a further step towards the next generation of geospatial intelligence. SMGI is a sub-category of VGI and can be active or passive, depending on the type of application with which it is collected: applications purposefully created and/or used to collect SMGI in participatory initiatives