I'm using ActiveResource and I've tried:
 @personas = Persona.all(:page => params[:page], :order => 'name')
 @personas = Persona.all(:page => params[:page], :order => 'company')
 @personas = Persona.all(:order => 'email_address')
 @personas = Persona.all(:order => 'company')
They all return the same order. I assume it's sorted by create date.
The docs state: "Possible values for the "order" parameter are name,
address, donations, most_recent_donation, email_address, company, and
added." 
http://www.donortools.com/userguide/api/personas
Any suggestions?
-Ryan W.