Why don't we have a site that lists several keywords of a certain thing.. like if we can't remember a book, but we know there was a garden on the front cover, and there was a boy, and it was set during the summer. We could have a site where we could search "boy", "summer", "garden", and it would look through a database of several books (everything would be seperated by category - books, movies, music, etc) and return relevant results. Of course, people would have to set these keywords up, that would be the main issue. But I think thanks to the grace of Reddit we would have several hundred people willing to volunteer a few keywords for something they like.

So basically,

Damn it, I can't remember this movie. There was a movie anchor, based somewhere in California, sometime in the 2000s.

So let me search.. "California. 2000s. Movie anchor."

... searching database ...

Relevant Results: Anchorman (2004).

Oh, that was it! Let me add a few more keywords to it. "San Diego. Will Farrell. Afternoon Delight."

See what i'm getting at? Does something like this have any promise, or does it already exist?