Thought you guys might like this paper on a recent modified Turing Test run in Second Life with a 78% (!) pass rate.
http://www.sciencedirect.com/science/article/pii/S1071581914001049
Our blog post gives more background, context and a link to a possibly free copy of the article.
http://daden.co.uk/conc/blog/2015/01/daden-chatbot-significant-passes-modified-turing-test-virtual-world
Disclosure: We (Daden) came up with the idea of the test (in 2009), and supplied the chatbot engine, but Loyola Marymount University designed the test, authored the bot, ran the test and analysed and published the results.
David