Fuzzy Plans - Make up plans to do with friends such as Golf Sometime in the future and use this to go back and forth to finalize plans and see what your friends have going on.
http://www.skobee.com/

Smack Shopping - Claims to be the first online gameshow. They put up one item at a time and count down a precentage of money back you will get until the set quantity is sold out. You can potentially get some great deals on things. Also a game where you guess the percentage off when it sells out and get points for that.
http://www.jellyfish.com/smacktv/channel/1

Geni - Build your family tree online and connect with your family, as they sign up and sign others up you can potentially build you family tree and have a way to connect with them all online.
http://www.geni.com/


Ways to use your time more productively
http://www.lifehack.org/articles/productivity/20-productive-ways-to-use-your-free-time.html