The statistics I had said more than a half of all user have 1024 x 768 resoultion.
I thought that’s the future and started optimizing my sites for that size when I bought my new 1024 notebook.
My old sites that I made with my 800 notebook looked ok with my new one
because I was simply always using 100% tables.
My new site will have width 750 tables.
Thought shall be ok for the minority, too.
We have different statistics.
I think some space on the sides cannot hurt.