The potential of a system for organizing your ebook collection? Your thoughts?

I am a bit of a stickler for keeping things organized.

For my "regular book" collection, that is, books that one buys off Amazon, the local book store, you know - the ones that come with a ISBN number - I use a very neat piece of software to keep it organized. When I have a soft copy of the book at hand, the software reads the title from the pdf, automatically, and makes an intelligent guess at the ISBN number, downloads ALL the meta data relevant to the book (author, publisher, blah blah), and keeps it in store for me. It gets this right 95% of the time - in the remaining cases I just have to look up teh ISBN myself and key it in. No big.

It's got a nice visual front end for me to browse through the books - needless to say, after the metadata is there, I can search by author, or tags, or whatever.

Is there anything similar for ebooks/info products that I've missed all along? I'd love something like this. And if there isn't, I'd be keen on setting up a database (a la ISBN numbers) that keeps track of all ebooks in the world, ever.

Question to publishers: Would you be willing to pay a nomial fee (not more than a couple of bucks!) to get yourself on the database, and an unique ID?

Question to buyers: Would you pay for software that keeps your growing ebook collection in check? Or an online service that lets you backup your entire collection in a secure way?

And of course, these questions may be completely irrelevant if someone can point me to a system in place that I've missed completely. If there isn't, I'd be eager to set something like that up, I do imagine I have the technical skill to get going on it. I'm beginning to feel really tired of being the noob; and this sounds like a reasonable start (let me know if I'm totally off on this)