Ever wondered how does Yahoo mail page (http://mail.yahoo.com/) opens in flash . .Is it a strong servers or the programming ? How can we optimize our websites to open in quick speeds ?
Here are some optimization tips directly from Yahoo!... http://developer.yahoo.com/performance/rules.html
There's actually a Firefox extension for Firebug that analyses a page and suggest ways of speeding it up. http://developer.yahoo.com/yslow/