New Study on Accuracy in Chat Reference

This article, published in January, may be of interest:
Radford, M. L. & Connaway, L. S. (2013). Not dead yet! A longitudinal
study of query type and ready reference accuracy in live chat and IM
reference. Library & Information Science Research 35(1), 2-13.
Brief Description:
Longitudinal results compare 2004-2006 transcript sample to 2010 sample
and show that ready reference questions are holding at about 30% of all VR
questions (!) and that accuracy has made a significant rise to approx. 90%