In Safari, if you want to copy some text and images from a web page, but the image (even though highlighted) won't transfer if you drag-and-drop the selection into another application. So after you highlight the text and image you'd like to keep, copy it with Command-C, and paste it (Command-V) into an RTF TextEdit document. The picture, text, and any embedded links will all be there.
I've loved clippings since drag-and-drop first appeared (wavy flashback lines -- "wow, os7 is awesome! no more font/da mover!" -- shaking off cloudy haze), and have tons of them, filled with interesting little tidbits. And yes, I also greatly utilize File » Print to PDF, but with all of the extra stuff on web pages, clips are still the way to go for grabbing a little piece of info. It's not exactly a clipping, but almost as good with some advantages. I think this works with older versions of Safari, and you can paste into Stickies (or any other application that supports RTF).
Mac OS X Hints
http://hints.macworld.com/article.php?story=20070713153732324