Google Quality Raters Leaving Traces When They Visit Sites

This morning I reported at SER that Google's EWOQ Search Referral String are being found in webmasters web analytics tools. For example, some people are recently noticing the URL https://www.google.com/evaluation/search/rating/task-edit?task=XXXXXX coming up in their referrals analytics. When I try to go to that URL, it tells me I do not have sufficient privileges to access that area. This EWOQ is the place for Google quality raters to leave feedback to Google on relevancy and search quality of the results.