I have been using Safari Beta 4 for close to 48 forty-eight hours now. While not blowing my mind wide open, it does offer a few useful features.

• Cover Flow, while useful in iTunes, finds a way to be even more useful as a web browser feature. Cover Flow in Safari allows you to visually search your bookmarks and history, a welcomed feature for someone like me who tends to forget names much easier then faces.
• Top Sites. While not being incredibly useful, is in my opinion, much better then a static home page. The ability for it to inform you of which pages have changed since you lasted visited them is a nice RSS-esque feature.
• Nitro Engine. While totally having a lame name, it’s always nice to be able to load the many pages of the www just that much faster.

So, as LeVar Burton would say:  You don’t have to take my word for it. Check it out for yourself. Apple.com/Safari