In my search, I only noticed the "Block all microsoft.com results." I didn't see any similar capability to block results from, say, YouTube. Or Laplink, or ZDNet, or Gartner, or anyone else.
My first suspicion was that a Wikipedia editor was controlling Google, and since my search was on Windows 7, the editor was allowing me to skip Windows 7 items that were obviously written with a biased viewpoint. (I have more thoughts on this.)
My second suspicion was that this was part of the Google-Microsoft (Bing) search war.
Neither suspicion panned out. A few minutes later, I tried the same search again, and was not asked if I wanted to block results from microsoft.com.
So what did I see? I don't know. Do you?
