You know this game where everybody gets to add one sentence to a story? Well, here's the online version. In order to make it a little bit more interesting and protect the concept a bit from abuse, each visitor can contribute one candidate sentence. When there are four options, a vote starts and the first one with two more votes than the others gets added. Repeat. What do you think?
It is generally agreed that "Hello" is an appropriate greeting because if you entered a room and said "Goodbye," it could confuse a lot of people.