I think this is a really stupid move that just shows that they have no idea how to beat blog spamming.
The reason?
The people who are sitting at the top of the SERPs have just been handed another weapon for their arsenal. Any “tool” which has the potential to influence the SERPS, or Page Rank, that requires outside influence can and WILL be massively manipulated.
I don’t wish to elaborate any further but there are likely some of you who will see or have an idea about what I am talking about.