Warning: Geek posting.
Safari is the web browser that Apple has been hyping for Mac OS X for the past several months. The first release was well received for being a fast, reasonably accurate web rendering engine. The number one piece of feedback that Apple received on it (primarily from users of Mozilla) is that Safari needs what is known as "tabbed browsing". I got used to it from Mozilla as well. This morning all the Mac news sites were mentioning that Apple had released a new version of Safari. It had numerous improvements and included tabbed browsing. Yeah! It even seems to have limited support for opening a cluster of websites in tabs.