Open Thread - 4/30/2011

I haven't had these for a while. Following a request from the new year I've been mulling how to write up Population Structure and Eigenanalysis in an intelligible manner to the general readership. Still kind of at an impasse. On a logistical note, my email address is really getting on way too many mailing lists. If you want a prompt response from me twitter might be best, at least until I get overwhelmed by the noise on that service and move on to something else....