While writing HTML5, the W3C group seems to have broken compatibility with HTML 4 again. No longer can you specify colspan='0' on a td tag to let it span the rest of the row. (sigh) I guess it wasn't all that important since only firefox ever implemented it correctly in the first place. Opera did support rowspan='0' as well, but that is no longer valid in HTML 5 either.
Slashdot videos: Now with more Slashdot!
We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).