Homepage - Your can set which ever website your like as your default homepage, in this case its www.google.co.uk
Browsing - Thanks to Apple new Nitro Engine page load 3 times faster than Internet Explorer 8 and Firefox 3, on both Windows & Apple computers
Top Sites - Top Sites at-a-glance preview of your favorite websites. Safari 4 tracks the sites you browse and ranks your favorites, presenting up to 24 thumbnails on a single page. Sites with a star in the upper-right corner have new content. A single click opens the page and updates its thumbnail. Whenever you want to return to your ever-evolving Top Sites page, just click the new Top Sites button in the bookmarks bar.
Top Sites Customized - You can even customize the display by pinning a favorite site to a specific location in the grid. That locks it into position, so you know just where to find it every time you open Top Sites.