Just a heads up for those of you who have access to the so-called moderator tools (10k+), you can see various statistics related to the anonymous feedback mechanism (i.e. that from persons of no account), and also see list of those post which recive better or worse anonymous feedback then votes and those that simple recieve very positive or negative anonymous feedback.
I was a bit surprised today when I noticed that we have recieved more than 12k such votes which averages more than one per question and is almost 10% of the more usual sort of votes.
For those that can't see it right now, it is running about 2:1 positive.
In addition sam.saffron has provided a data explorer query that can extract this data on a per user basis (which I believe gets around the 10k limit for the on-site pages).