UPDATED@18 April 2011! Raptor Talks scores 84 out of 100 in Google Page Speed ! We keep on improving this site and it hopes the score will improve.

Page Speed is an open-source project started at Google to help developers optimize their web pages by applying web performance best practices. Page Speed started as an open-source browser extension, and is now deployed in third-party products such as Webpagetest.org, Show Slow and Google Webmaster Tools.

p.s. Microsoft.com only scores 78 . Raptor Talks win!

Source : Google Page Speed