Wiki Legislation Mark-Ups?

Now here's a great idea (via the Wikipedia Blog): Congress should start writing legislation with a Wiki model. Excerpt: These are really thought-provoking suggestions. I was particularly struck by Karl's suggestion of a version control system for Congress. They say you don't want to see either laws or sausages being made, but I think they are wrong. Imagine how much more transparency and accountability our government would have if it were possible to see what changes were made by whom, who inserted extraneous riders into various bills, and generally to track the influence of various interests by the new visibility into their actual control over the knobs and levers of government!