This is another try from Google to control all over the Internet. Creating Knol--basically Wikipedia made by Google--which you could write anything you know as a knowledge base controlling & filtering by others.
What really differ from Wikipedia is Google needs you to use your real name instead of "anonymous" you found in Wikipedia. In my point of view, it's just better to put your real name in order to make you feel more responsible for what you write. However, I don't know how Knol will go since it's going to have a tough fight with a very large existed Wikipedia community. By the way, there will be only positive things come up after this fight--a lot more stuffs to make people more knowledgeable. Keep reading!