MSDN hearts Firefox (and IE)
First Duncan made sure that LiveBookmarks work in Firefox 1.0, and now Lowell has fixed the appearance of code in Library articles.
That solution Lowell came up with was a rather interesting dive into browser differences that still exist (maybe not a browser war, but at least a browser disagreement). Fairly innocent, in my opinion, but it is yet another example of what happens when three people read a spec (in this case CSS) - you end up with 5 different solutions. Definitely underscores something I got told once - always write the validator first.