Rasabon
No insult to your Photoshop skills, Valheita, but I think the site in the example is as ugly as hell. That is wasted space. It ruins the aesthetic of the site and makes nearly all of the screen empty grey. How is that supposed to be more appealing? (Again, it's the idea that I think is bad, not you or what you made.)
Oh, you want to talk about wasted space...
Mindset
panoptes
centering the site doesn't make less negative space, it just cuts in half
which is good from a composition point of view, but gaia is not a painting. if you want to maximise usable space, the solution would to make the forum widths a relative instead of a fixed value, to conform with any resolution that loads it
*nod* I generally prefer relative width sites when designing. The problem is that it just spreads out the content, and eyes traveling horizontally on high-resolution widescreens is a bit straining. A paragraph in the forums at 1024x768 could turn out to be one sentence half a page long at 2560x1600.
There should be some kind of happy medium. Mind you I always say users should fix their own content instead of waiting for something that may never come (and there are CSS adjusters for other browsers than Firefox), but... well.
You know, Gaia could just be text based? Why don't we just add everything else and not bug Gaia about it? Will that make the site any better?
No.
Any site that uses a fixed width is usually centred, that includes the entire site, both when posting, viewing content and the forums, not both. I'm sitting here at a resolution of 1440x900 (I could be an a** and stretch the site across my dual monitors) with a blank space the size of the posting box itself on the right-hand side of my screen.
More or less, anything I set up in BB Code is NEVER going to look like it should do, because what is fixed when I post it, is stretched in the final submitted message.
When a site is stretched, it makes use of the space it has. It doesn't left align the whole thing.