> First mover advantage. It's like asking why no one has created another Reddit, or another HN. When the original exists, a derivative doesn't gain traction unl

> First mover advantage. It's like asking why no one has created another Reddit, or another HN. When the original exists, a derivative doesn't gain traction unless something goes seriously wrong. Good point, yet here we are: - slashdot feels like a shadow of its former self - reddit replaced digg - lobste.rs is a healthy alternative in addition to hn - stackoverflow replaced expertsexchange I still think someday someone will create a better q/a site and if I was an a position to do a startup to change the world for the better that would probably be high on my list of ideas. I admit I could be wrong, but I am surprised that nobody has tried as far as I can see: after all the early bird gets the worm but the second mouse gets the cheese, and there's a lot to be learned from what works and doesn't work today.