As was announced on the website last spring:
The fifth Joint Japan-North America Mathematical Sociology Conference will be held on Thursday, August 16, 2012 in the Colorado Convention Center, Denver, Colorado. The conference focuses on advancement of mathematical sociology worldwide and fosters friendship among those whose work is on mathematical sociology in all countries. Thus this is a wonderful opportunity to know cutting-edge topics in mathematical sociology and to meet people who share great enthusiasm for it.
Unfortunately I will miss most of it, but look forward to meeting people there towards the end of the day.