Bit of both - the sources are "curated" and then we automatically discover other sources. A big part of what the software does is to establish source quality a

Bit of both - the sources are "curated" and then we automatically discover other sources. A big part of what the software does is to establish source quality and authority. The taxonomy automatically evolves - so for example during Halloween, words related to Halloween rise into the statistics even though we never manually seeded those words into our system.