I found Matt's blog this week from someone who linked it here, I was a little interested in finding out "who is Matt" so I spent some time reading his stuff and even whined about a couple of my failing sites in his reinclusion blog post here:
http://www.mattcutts.com/blog/reincl...request-howto/
Matt has shown interest in building a relationship with webmasters and his blog posts are very active with comments BUT it will soon be more than he can handle yes? This is a great opportunity for Google to start to focus on this and I believe this "reinclusion" is an indicator that they already have.
Matt has this somewhat niave way about him that I find refreshing, he is like a smart kid who built a machine but is yet to learn what the machine has done. He looks to the us and even listens to spammers while he drinks sprite and they get loose lipped from the hard stuff at parties ;)
As I always say, I am no expert but I believe that these search engines are still very primative and making drastic changes really hurts in ways they are not even aware of yet?