Sharks in the Lottery Pool:

Planning on going in together with your office mates to try and win today's record $500 million Powerball jackpot? Think twice. There may be sharks in that there office lottery pool. While not all winning pools end in bitter litigation, odds are that they will.

Enough lawsuits have emerged from winning lottery pools to create a new set of case law, Russ Weaver, University of Louisville law professor, told USA Today.

Photocopying the group lottery tickets with the names of the members of the pool listed and distributing the copies among the members before the drawing, is one way to ensure proof of who belongs to the pool and who doesn't and which tickets are shared.