In the "why use this?" department, I think the answer to the question is that you want to distribute massive amounts of content in a single-file (making content

In the "why use this?" department, I think the answer to the question is that you want to distribute massive amounts of content in a single-file (making content updates easy) while also maintaining a POSIX-level control over the content in the container.. so if you've got a massive SQL database full of content - say a dictionary or wikipedia, or whatever - doing a content transform that spits out a single .db to your paid/registered/updating customers is quite useful..