Which charities spend the most on administration?

I've tried hard not to bash the MS Society because, despite their poor attitude vis-a-vis CCSVI, I don't really know the organization and they may, in general, be doing good for MSers.  However, it's really hard not to get angry when I find out that almost half of any donation to them goes to administration and fund-raising: http://www.moneysense.ca/2009/12/21/canadas-40-biggest-charities/ - that's scandalous!