I don't intend to downplay the contribution, having a large collection of spam/porn classified web docs is still a very nice thing to have for researchers.
This is our first donation. We have a lot more we plan on giving, but for user queries, for example, the privacy issues are a lot more difficult to work through. We have no interest in being the next privacy scandal.
As far as I can tell, this is the best resource for publicly available search engine query logs.
http://jeffhuang.com/search_query_logs.html
I don't intend to downplay the contribution, having a large collection of spam/porn classified web docs is still a very nice thing to have for researchers.