Updated for Safari 4
Did you know you can open several web
pages at once with one click on Safari's Bookmarks Bar?
It's really quite easy to do.
First, create a new bookmarks folder on the Bookmarks Bar and name it Favorites (or any other meaningful name). Go to the web pages you want to include in your one-click Favorites folder and add a bookmark for each page to the folder you just created. Next, select "Show All Bookmarks" from the Bookmarks menu and put a check in the box next to the new folder name under the column labeled "Auto-Click."

From now on, when you click on your new Favorites folder on the Bookmarks Bar, all the web pages in the folder will open, with each page in a separate tab. This is a great way to easily and quickly view your favorite web pages.