What I meant to say was that this should not be part of the browser. That just bloats it up. A separate app would have been much better.

Opera's target audience consists mostly of geeks, anyway. Downloading and installing a separate app would not have been a problem for these people.

Downloading an external webserver or ftp is not a problem for most geeks. But it takes configuring, knowing what you're doing, etc. The goal of Opera Unite is rather to bring this possibility, to another audience, to have easily such services.