WHAT IS A SUPER PAC? Very good explanation by the Onion.

 http://www.theonion.com/graphic/what-super-pac-50362
http://www.theonion.com/graphic/what-super-pac-50362

The result of two controversial 2010 federal court cases removing traditional restrictions on political action committee spending, super PACs are expected to have a significant influence on the results of the 2016 elections.
Here is everything you need to know about super PACs:

Q: What is a political action committee?A: A PAC is a living, breathing organism that is capable of swallowing hundreds of millions of dollars and giving birth to a single American leader.
Q: What is the purpose of super PACs?
A: To counteract the excessive influence ordinary voters exert on U.S. elections.
Q: Who can contribute to a super PAC?
A: Any entity ranging in size from a small packaged foods conglomerate to a giant telecommunications conglomerate.
Q: Is there a limit to the amount of money that can be donated to a political action committee?
A: Donations are strictly limited to the amount of money the donor possesses.
Q: What do super PACs spend their money on?
A: Selflessly ensuring that voters are as informed as possible about why Assemblyman Michael Evans is the wrong choice for Albany.