Matt Cutts, the head of Google’s Webspam team has published on his blog his session at Web 2.0 Expo:
You can access all the video from the expo on Blip.tv
It is interesting to note that Google have no problem with SEO and that the politic again (web) spammer is to make them lose time, effort and frustrated them 🙂
You can also view the slide from his presentation directly on his post.
Ahmet