Here is some fun that you can have with the new Safari:

1. Make sure you have tabbed browsing turned on in the Preferences.
2. Open up the Bookmarks and go to the Bookmarks Bar.
3. Create a new folder using the "+" button.
4. Drag some links into it that you like to check on a daily basis.
5. Open up a new window.
6. Click on the name of the folder in the Bookmarks Bar with Shift+Apple held down.

This will open tabs for all of those links and start them downloading simultaneously. Then you can use Apple+W to close the tabs one by one as you catch up. Pressing Apple+W on the last tab will close the window.

Another way to do this is to go to the tab and select 'Open in Tabs'