Web Sites
Here are a couple of websites that are neat...
Freecyle allows you to give your unwanted items away to stop them from ending up in landfills. It all started when the founder couldn't find anyone to take his bed. So, he started a forum and then other people started posting items that they were willing to give away and Freecycle was born.
Blackle is a search engine powered by Google. The creators claim that since a computer screen is predominantly black, having a primarily black background to a web page will decrease the amount of energy used.
Something random...I never really thought about a baseball being considered income. I am guessing that Matt Murphy didn't really consider it either.