My humble entry into the Shared Media competition.
Don't expect to win the $L 10,000 but I had fun putting together a little chi square demo showing how Google's Spreadsheet can be used on a prim. The hard part was working around the limitations of Google's Spreadsheet.
Sorry Google, you may be taking over the world but you ought to spend some time improving your spread sheet especially protections. I can't believe your programmers couldn't figure out how to protect just part of a spreadsheet!
I finally figured out that I can protect my original spreadsheet and have people access it and copy it and just work with the copy.