I downloaded a preview of a new browser today called Flock. Its an interesting project, its based entirely upon Firefox with some interesting add ons. The most useful ones are intergrated blogging, the flickr toolbar, and the Shelf. I figure I'll use it as my main browser for a while and see how it goes, so far they've got a lot of things right...
It looks good, it's easy to use, and it immediately tells you what extra features it has, which nicely answers the "Another Browser, So What?" question. The shelf is very hand in that it sits there, and you can drag and drop anything you like onto, whethers its an image, text, link etc. Its handy if you're doing research and you want to get some quotes together.
The blogging tool looks very impressive, but doesn't yet work with serendipity (the weblog I use). It follows the theme of the browser, and indeed the website, in that its pretty and usable. I did up an 8 second video of it, if you're interested (9 meg file).
Anyways, if it turns out to be amazing I'm sure you'll hear of it elsewhere, I'm gonna try it out for a while.
I just installed the mac version and will give this a go too. My first impressions are very good and I like the "shelf" thingy.
Also, looks very shinney on the mac, much shinier than FF.
The one thing that is annoying me about it straight off is that it has no mouse gestures and that the extensions page doesn't support them yet either. I have become so reliant on mouse gestures that I can't use IE or Camino or Safari anymore so that one missing feature may be enough to keep me off Flock but I am gonna give it a try regardless.