Not so much a hint as pointing out a new feature that isn't listed on the iTunes overview page:
iTunes 7 supports burning CD text (only about five years too late). On the Burning tab in iTunes' preferences, there is now an option to 'Inlcude CD Text' when burning a music CD. I don't remember this option being there in iTunes 6.
This option is not enabled by default -- you need to go and turn it on (at least I did after upgrading to iTunes 7).
Mac OS X Hints
http://hints.macworld.com/article.php?story=20060914063621259