Blogpins are being marketed as the "coolest new way to express yourself".

It's a 3" mini CD that you can wear like a button, pop off the front and play in your computer or tray loading CD player. What makes a "blogpin" what it is, is the clear plastic holder with a pin on the back. The 3" mini CD itself is just like any other. But, you burn the CD yourself, and create your own CD labels, so that you can do what you want with it.

They can used as keepsakes for Sweet 16 Parties, photo yearbooks, promote your favorite cause, give away demos of new software, promote yourself, or express yourself. You can burn sample music from your band, and throw them from the stage.