A 'primer' on Opus Dei, for those following Ruth Kelly's career

I've been fascinated over the past couple of weeks to read that a recently-appointed member of the Cabinet, Ruth Kelly MP, is a member of 'Opus Dei'. She replaces Charles Clarke as Education Secretary, he having been moved to the Home Office upon the resignation of David Blunkett as Home Secretary.

I know next to nothing about 'Opus Dei', so this BBC primer on the subject is quite interesting. Whether it will entirely stifle the voices which have described it as a 'cult' is rather unlikely (in my view). Long-term readers of this blog will know that my views on religion (any religion) are highly equivocal so I tend to regard any and all religious practices as being somewhat 'cultish' in any case.