example 1:

you send a link to an article:

- article's title gets indexed

- article's content gets indexed

- article's machine extracted meaning/tags get indexed

example 2:

you send an imdb link to a film:

- film metadata is extracted (author, score ..), indexed

and so on for any kind of knowledge you want to store.

Then you can search and match into everything that it's indexed. Every stored information will have a custom view attached allowing the user to interact with it. (example, set that you have seen a film inserted or add a score.)

Would you pay for something like that? If so how much?