A few months ago, google announced that landing page load time will soon be incorporated into Quality Score.
In short:
Why are we doing this?
Two reasons: first, users have the best experience when they don’t have to wait a long time for landing pages to load. Interstitial pages, multiple redirects, excessively slow servers, and other things [...]

Register here to get access to exhibit hall and a set of keynotes
ad:tech – 26/27 June 2008
ad:tech brings together brand advertisers, traditional & interactive agencies, portals, on-line publishers and technology providers. With the rapid growth in technology and use of digital media, ad:tech offers an unrivalled opportunity to discover new practices and technologies, and to [...]