We are focusing right now on how comments could be used to build up a better user context, and your comment has made me think about how we can feed comments in (instead of just titles and urls) for your selected preferences to make a better profile, without needing to scrape anything (expensive and slow).
But i think that would only work because of their quality and relevance generally, which would for sure make it an interesting knowledge source for pure LLM search. Feels like something someone should build or maybe already has! keen to see if anyone knows of projects like that.