Every year, usually near the beginning of summer, 3 friends and I take part of a contest/treasure hunt. There are 100 questions that need to be answered using whatever resources available, and the winning team wins a million dollars to split, and a week at a ranch to relax. This last year, I wanted to have some real time way to track who was answering which question, cite their sources and allow the others in the group to vote on how strong we thought the answer was. I thought a spreadsheet would be the perfect example, poked around online and found google docs. We were all able to see each other's answers, comment on them, vote on them, and it really made things much easier than email or phone calls, as we had done in the past. We didn't win, but it made working together a hell of a lot easier that in the years before, and I did win a portable chessboard that I can pack on my motorcycle. Google docs is a very effective way to share documents with others that can then edit, comment etc. on them, all while saving space on your hard drive!