This document discusses research on aggregating and analyzing social media content about events from multiple platforms. It describes approaches for retrieving relevant content for known events using precision and recall-based queries. It also discusses tools for supporting journalistic analysis of Twitter data around broadcast news events. Evaluation of the approaches focused on relevance and novelty of retrieved documents, and supported insights in qualitative studies. The document advocates for extracting reliable event structure from social media and creating event presentations that improve with more content.