[blahedo]

I don't know the future prognosis of OmniWeb---it's been a while since they've released anything but bug fixes---but they've had side-tabs since they introduced tabs close to a decade ago. The advantages of this are many: they take up no vertical space, they can spread out vertically and show you thumbnails (of the actual page, not a favicon), and they can be in a scrollable pane. After years and years of using this, it's downright painful to use the top-tabs found in any other browser, which are cramped and information-light, and as you get many tabs going, not only are most of them not visible on-screen but the ones that are have just one or two letters and a favicon, making them indistinguishable as well.

All of which is to say, yes yes yes to side-tabs.