In Signallium(TM) Digital Assets - a search and market intelligence tool for digital assets by Robotic Online Intelligence, we are deploying our 'robo-curator' of information in order to automatically assess what to pay attention to, the shifts in narratives surrounding the key digital assets, through the word frequency indices and similarity analysis. 

One of the methods we apply is to identify relative spikes in the (relative) frequency with which certain types of words are being used across a pool of publicly available headline-level content from select sources - not millions or billions but rather a curated set based on research, and fixed/modelled for the specific domain.