Commonly used pixel sizes for webpages and their pros/cons

Question

What are the most commonly used pixel sizes (primarily widths) and what are there advantages and disadvantages?

How can I best find a happy medium to give a good exp

Answer 1

The most common size is between 900-1000 pixels there are some good sources for screen size useage which most people tend to desgin for the largest group. mostly its assumed anyone with a 800 by 600 screen wont want to be doing much business. ie strapped for cash (big generalisation)