Not sure if folks here have had a chance to look at this : <a href="http:&#x2F;&#x2F;queue.acm.org&#x2F;detail.cfm?id=1454466" rel="nofollow">http:&#x2F;&#x2F;queue.acm.org&#x2F;detail.cfm?id=1454466</a> ? Would be very interested to get your thoughts on this.