If you are using version 110819 of Winskeet it is soon going to be obsolote according to PS3 dev uf6667.  Version 111120 just been released.  In the event you aren't quite sure what its used for this is the software you would use to flash your Progskeet device in order to flash hardware and downgrade your PS3.

Here is what uf6667 had to say about the latest updates.

"Originally Posted by uf6667
#ProgSkeet: New WinSkeet - 110819 is now officially obsolete (NAND works, also using WinUSB now)
#ProgSkeet: New iSkeet
#ProgSkeet: New YASkeet
#ProgSkeet: Complete solderless NAND dualboot POC works, no more cutting traces!"

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