Recently, the OSGeo wiki was updated from an ancient version to the current LTS release of MediaWiki. This update broke the functionality of the first OSGeo wiki usermap implementation, dating back to 2008. The map shows the location of OSGeo members on a web map integrated into the wiki. A new version of the usermap was implemented based on Semantic Mediawiki (SMW) to replace the first usermap. This presentation will describe the new features and possibilities that SMW adds to the OSGeo Wiki. After a short introduction to SMW, based on the OSGeo member model, that recently replaced the old usermap, a basic data model and its use in the wiki, as well as major features of SMW are explained. The datamodel development approach, using mobo, applied for implementing the OSGeo Members map will be explained briefley. Additionally, simple examples for bootstrapping smaller semantic models are given too. The presentation concludes with ideas for further applications of SMW in the OSGeo wiki, like the already implemented Advocate and Board lists pages, as well as possible applications, for example a collaboratively maintained OSGeo/FOSS4G service provider directory, or even a collaborative open geospatial data directory are proposed or suggested.