This is a very simple way to create a sticky note on your Mac.
Once you have some text highlighted, press the following key combination:
Command + Shift + y
This will then create a new sticky note with your text. One thing to note is that this will not work while you have Mail loaded, if you have Mail loaded then it will add a sender to the address.
This tip was originally heard on the Mac Geek Gab podcast, if you are a Mac user I highly recommend their podcast.
I am always interested in feedback so please feel free to add any comments, or you can mail me here. If you would like to submit a quick tip with full credit and links back to your site then also feel free to contact me.