Hmmm the 3 column css and positioning….I did an experimental site a while ago that was only css and positioning. It never appeared to help too much with the SE’s and I ended up converting it to tables as in Dreamweaver the positioning made it a nightmare to edit…hiding text etc.
I pretty well use css mostly to format only and tend to stick with good old fashioned tables.
Mind you I love to play and the next experiment may be a virtual 3D portal, something I have been toying with for ages. The let down of 3d has always been speed but all that has changed. You can be in a virtual world in moments now even on a dial up connection.