Did you see this link, within the 'fake files' thread? there's a lot of info there, plus some screenshots. All you have to do is right click on a file in the search results > advanced > lookup file with Bitzi. Then the Bitzi page will come up. Bitzi's not within LW's options or anything...you just access it by right clicking on a search result. If you see 'unknown bitprint', that means nobody's rated the file yet.
How to use Bitzi Web Lookup

Within that link there's info about Bitcollider. If you register with Bitzi & download bitcollider, you'll be able to rate files yourself & add them to the Bitzi database

Nothing in the # column means that the file has only 1 source. In theory, you'll get faster downloads from multiple sources but that doesn't mean that a file with a single source isn't good. Depending how fast host connections are, you can sometimes download a file faster from a single source (with a fast connection) than from multiple sources (with slow connections or too many upload slots open).