Honestly, I think I would prefer to have all the settings on one big page. It's different for a local app, because switching from one settings pane to another is instant, but for a website, that's not the case, and it's annoying, when you're looking for a certain setting, to have to wait for pageload after pageload only to find out it's not on that page either. There isn't really any way to make the divisions so logical that folks can easily remember which page each setting is on, so by splitting the prefs into categories and putting each category on a different page, people are going to end up just going through them one at a time. That's my analysis.