Soap bubbles?

Being new to FT, I am wondering what exactly a "Soap Bubble" Carrier is?

Thanks!

Jason
This message (including any attachments) contains confidential
information
intended for a specific individual and purpose, and is protected by law.
 If
you are not the intended recipient, you should delete this message.  Any
disclosure, copying, or distribution of this message, or the taking of
any
action based on it, is strictly prohibited.