I was playing with the tabs to see if I could move them around in the order of preference. I hate when I'm doing webwork and open loads of tabs to find out similar pages are on the opposite side of the screen.
I wasn't able to move the tab but I did notice in Chimera that you could drag the link to another tab.
[Editor's note: In addition to the address in the URL bar, you can also drag any link on the page to an existing tab...]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20030128062342589