Adoption: How Are We To Help?

Mary from Owlhaven attended a conference on adoption a week or so ago and blogged about the various sessions.  I cannot seem to get her post on James 1:27 and the Church out of my head.  

I have several friends who are either adopted or going through adoption so I know how much it can affect a family.  I never gave it much thought before though on how it can affect a city.  What can you do to support those going through adoption or foster care?