The following hint was emailed to me by macosxhints reader close2me, and I found it interesting enough to write up and post with additional detail.
Want to get more sites on your Safari bookmark bar? Or are you more of an icon than a text person? Consider replacing the names of some of your bookmarks with icons, as seen in the screenshot.
From the left, I have my Google Related button, the Apple home page, and then my News folder. How do you use icons instead of names? It's actually quite easy.
Start by enabling the character palette, as described in this hint. Once enabled, activate the palette and then set the "View" drop-down to "All."
In Safari, bring up the Bookmarks page and edit the name of one of your bookmarks -- select all the text and hit Delete so you have a blank name field. Switch back to the character palette and find an icon that you like (check in Miscellaneous Symbols, Miscellaneous Technical, and Dingbats for some good ones). Click once to select it, and then hit the Insert button. You should see your chosen symbol inserted into the bookmark name field in Safari. That's all there is to it! You can also add spaces to improve the spacing of your newly condensed bookmarks bar.
This hint, of course, should also work on any other browser that will accept input from the Character Palette (which should cover any native browser).
[Site news aside: I ran out of time this morning, hence the low hint count...]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20030312070830251