Norwegian web expert Opera has today announced the release of its Opera Unite service that promises to shake up the old “client-server computing model of the web”.

Opera Unite works by turning a computer into both a client and a server – effectively removing the need for a third party server to host data.

What this means for the average web user is that serving and accessing data should become much easier. A user simply selects folders on their PC that they wish to share. These folders will then accessible via web browsers at a designated web address. Opera have stated that the service should work with any modern web browser.

Apart from standard file sharing, Opera Unite also allows the creation of photo galleries complete with thumbnails and also allows users to play any mp3 stored in a shared folder within its built in media player. More savvy users can also host entire websites on their PCs should they wish to. There’s also a social networking aspect to the service.

If you’re still not getting the gist of it, here’s a little scenario to illustrate its potential:

Johnny goes on holiday to Alaska – he wants to see the grizzly bears. He takes his netbook with him, which only has an 8GB SSD. Johnny has planned ahead though and has set up his desktop back home to share his mp3s. He can now access all of these via his netbook from anywhere with a web connection. He can also save the photos of his trip on his netbook on a daily basis and share them with his friends and family back home without needed to upload to a hosting site like flickr.

Opera Unite is available with special versions of Opera 10, which itself is a pretty good web browser.

If you still don’t quite get it, maybe this video will help. (Warning: video contains dramatic American voice over and mood-setting music).