I came across a recent TED talk on microbial communities and thought you all would be interested! The speaker, Jessica Green, is faculty at the University of Oregon and discusses the manipulation of environmental microbiomes in buildings. The data are preliminary but suggest that “bioinformed design” — designing buildings to cultivate desirable microbial communities — could be possible.
You can view the talk (which is, admittedly, simplified for general consumption) here: http://www.ted.com/talks/jessica_green_good_germs_make_healthy_buildings.html
The talk seems to be based on this 2012 paper.