I was reading  Jup Z's  post about google's new Web Accelerator beta.  I have checked it out and it seems to work pretty well  
  
 
the one thing I did notice is that if a page happens to 404  it will go to a custom 404 page from google  that suggests possible reasons, and then offers the google link so they can search for what they are looking for. 
Anyone think this could have a major effect on 404 traffic??
discuss.