[opminion]

If what you are doing is essentially a diff for news, then you might be onto something very interesting.

The way news are consumed is currently tiered by the temporal interval which they cover: breaking news, daily news, weekly, monthly, annual summaries. A diff for news can help process the different tiers from a single reader, without the "breaking news" tier taking over.

[ajitk]

At its core, the essential work is to detect changes important to the user. Adding summarization techniques to further weed out the noise would be a very important improvement.