At least on the Web, you can amend. The ethic of the Web is to say what you know as quickly as you can, and then reiterate over and over again. The Web is kind of a self-cleaning oven, and what you have up there can grow more accurate as time goes by. That’s never true of print. It’s always there for the ages.
This is a variation of the “release early, release often” directive in software development, isn’t it?